Manpower Details

Designation: Director
Emp ID: 2066
Work Place: Hyderabad Laboratory


  1. Ceramic filler, method of preparing ceramic filler and applications as resonator and  laminate thereof, R.Ratheesh, K. Stanly Jacob, K.P.Murali, Akhilesh Jain and P.R. Hannurkar, (US Patent No. US 9505902 B2, November 29, 2016

  2. Method of Producing low loss ceramics, V. Priyadarsini, R. Ratheesh, H. Sreemoolanadhan and S. Chandrasekhar, Indian Patent No. 275251, August 2016

  3. Ceramic filled fluoropolymer  Compositions, methods and applications Thereof, S. Rajesh, K.P. Murali and R.Ratheesh, US patent No. US9455064 B2, September 27, 2016

  4. Ceramic filler, method of preparing ceramic filler and applications as resonator and laminate thereof

    R.Ratheesh, K. Stanly Jacob, K.P.Murali, Akhilesh Jain and P.R. Hannurkar (US Patent Application No. 14228342, March


  5. Ceramic filled fluoropolymer  Compositions, methods and applications

    There of, S. Rajesh, K.P. Murali and R.Ratheesh, US patent Application No.    14104,002, 2013

  6. Ceramic filled fluoropolymer Compositions, methods and applications There of   

    S.Rajesh, K.P. Murali and R.Ratheesh, Application No. 3815/DEL/2012

    INDIAN PATENT No. 241490, Date of Publication of Granted Patent: 16/07/2010


  8. Novel route for silica aerogel processing using a proprietary catalyst

    P Sasidharan, R Ratheesh, S. N Potty, P.A. Abraham and K.P. Murali, Patent No.241490, 2010

  9. Method of Producing low loss ceramics

    V. Priyadarsini, R.Ratheesh, H. Sreemoolanadhan and S. Chandrasekhar Patent

    Application No. 2295/CHE/2009.

  10. A New Ceramic Material for Microwave Integrated Circuit Applications

    H.Sreemoolanadhan, R. Ratheesh, M.T.Sebastian and P.Mohanan; Patent No. 213822, 2008


  1. Preparation,characterization and dielectric properties of  PP/CaTiO3 composites for Microwave substrates applications, Drishya,E.K.Suresh,A.N.Unnimaya,R.Naveen Raj and R.Ratheesh International Journal of Applied Ceramic Technology, 1-6(2016) DOI:10.1111/ijac.12554

  2. Synthesis and Microwave Dielectric Properties of  A16V18O61(A=Ba,Sr and Ca ) Ceramics for LTCC Applications , E.K.Suresh , K.Prasad ,N.S. Arun and R.Ratheesh ,J.Elec .Mat.,45(6),2996-3002(2016)

  3. Superior dielectric performance of engineering thermoplastic as a result of In Situ embedding of nanoscale mixed phase Molybdenum Oxide, Nilam Qureshi, Manish Shinde, R.Ratheesh, Anand Bhalerao, Bharat Kale, D.P. Amalnerkar, Electronic Materials doi 10.1007/s 11664-015-3686-8 (2015)

  4. Structure and microwave dielectric properties of Ultralow-Temperature Cofirable BaV2O6 Ceramics,  Unnimaya A.N., Suresh E.K. and R.Ratheesh, Eur. J. of Inorg. Chem., pp 305-310 (2015)

  5. Superior Dielectric Performance of Engineering Thermoplastic as a Result of In situ Embedding of Nanoscale Mixed-Phase Molybdenum Oxide, N. Qureshi, M. Shinde, R. Ratheesh, A. Bhalerao, B. Kale, U. Mulik, D. P Amalnerkar, Journal of Electronic Materials, 2015, 44, 2269-2276.

  6. Structure and microwave dielectric properties of 5BaO-2V2O5 binary ceramic, A.N. Unnimaya, E.K. Suresh, D. Johnson and R.Ratheesh, J. Mater. Science: Mater. In . Elect, 25, 1127-1131 (2014)

  7. Microwave dielectric properties of Ultra-Low Temperature Co-firable Ba3V4O13 ceramics,  E.K. Suresh, Unnimaya A.N., and R.Raaheesh, J. American Ceram. Soc., 97[5]1530-1533 (2014)

  8. Dielectric Resonators with complex crystal structures in the La2O3-Al2O3-TiO2 system for microwave Applications, J. Dhanya, A.N. Unnimaya and R.Ratheesh, J. Materials Science: Mater. In Elec., 25, 4617-4622,(2014)

  9. New Vanadium based Ba3MV4O15 ( M=Ti, Zr) high Q ceramics for LTCC applications, E.K. Suresh, A.N. Unnimaya, A. Surjith and R.Ratheesh, Ceram. Inter. , 39(4), 3635-3639 (2013)

  10. High Q Ceramics in the ACe2(MoO4)4 (A= Ba, Sr and Ca) system for LTCC applications, Surjith. A and R. Ratheesh, J. Alloys & Compounds , 550 , 169-172 (2013)

  11. Microwave dielectric properties of low temperature sinterable RE2MoO4O15(RE=Nd, Sm) ceramics for LTCC applications, A. Surjith. A, E.K. Suresh, S.Freddy and R.Ratheesh, J. Mater. Sci. : Mater. In Electron, 24, 1818-1822 (2013)

  12. Ba(Zn1/3Ta2/3)O3 filled PTFE composites for microwave substrate applications
    N.K. James, P.S.Simna and R.Ratheesh, Int. J. Mater. Struc. Integr., 7, 22-30 (2013)

  13. Barium Cerium Molybdate BaCe2(MoO4)4 , International Centre for Diffraction Data,
    Ratheesh, R and James, N , ia0167 (2011)

  14. Preparation, Characterization and Dielectric  properties of  Ba3-xSrxLiM3Ti5O21
    [M=Nb and  Ta, x=0 to 3] ceramics, T.P. Dhanya,  P.S.Simna and R.Ratheesh, J.
    Mater Sci. Mater. In Electr. 22(8), 974977 (2011)

  15. Synthesis, structural and microwave dielectric properties of Al2W3-xMoxO12 ceramics, A. Surjith, Nijesh K James and R.Ratheesh, J. Alloys and Compounds, 509, 9992-9995 (2011)

  16. Temperature stable low loss PTFE/rutile composites using secondary polymer,
    S.Rajesh, K.P.Murali and R.Ratheesh, Applied Physics A 104: 159-164, (2011)

  17. The effect of filler on the temperature coefficient of relative permittivity of PTFE/ceramic composites, S. Rajesh, K.P. Murali, H. Jantunen, R.Ratheesh, Physica  B :Condensed  Matter, 406(22), 4312-4316 ( 2011)

  18. Microwave dielectric properties of low temperature sinterable BaCe2(MoO4)4 ceramics, Nijesh K.James, R.Ratheesh,  J. Amer. Cer. Soc., 93(4),  931-933 (2010)

  19. Preparation and microwave characterization of BaWO4 filled poly tetrafluoroethylene laminates for microwave substrate applications, Nijesh K James, K. Stanley Jacob, K.P.Murali and R.Ratheesh, J. Mater. Sci.: Mater. in. Electr. 21: 1255-1261 (2010)

  20. Microwave dielectric properties of SrO-2CeO2-nTiO2 (n=4 & 5) ceramics, R.Satheesh and R.Ratheesh, International Journal of Applied Ceramic Technology, 7 (S1), E151-E155 (2010)

  21. Effect of particle size on the microwave dielectric properties of alumina filled PTFE substrates , K. P. Murali, S. Rajesh, K. J. Nijesh and R. Ratheesh, International Journal   of Applied Ceramic Technology, 1-7 (2010)

  22. Comparison of  alumina and magnesia filled PTFE composites for microwave  substrates applications, K.P.Murali, S.Rajesh, Om Prakash, A.R. Kulkarni and R.Ratheesh, Mater. Chem. &  Phys., 113 290-95 (2009)

  23. Preparation and characterization of high permittivity and low loss PTFE/CaTiO3 microwave laminates, S.Rajesh, K.P. Murali and R.Ratheesh, Polymer Composites,  30  1480-85 (2009)

  24. Preparation and microwave characterization of PTFE/PEEK Blends, Rajani K.V., S.Rajesh, K.P. Murali, P.Mohanan and R.Ratheesh, olymer Composites,  30 296-300 ( 2009)

  25. Photoluminescence and FTIR spectra of  pure and rare earth doped silica xerogels and aerogel, M.N. Muralidhran, Reshmitha and R..Ratheesh, J. Porous Materials, 16 (2009) 635-640.


  26. Microwave dielectric properties of PTFE/rutile nano composites, S, Journal of Alloys and Compounds, S.Rajesh, V.S. Nisa, K.P. Murali, R. Ratheesh, Journal of Alloys and Compounds, 477 (2009) 677-682

  27. Structural and optical characterization of Pulse Laser Ablated Potassium lithium niobate thin films, V. Jayasree, R.Ratheesh, Prabhakar Rao,  Peter Koshy, V.Ganeshan, V.U.Nayar and V.P. Mahadevan Pillai, Physics Status Solidi (a), 206(12), 2801-2809 (2009)

  28. Preparation and properties of silica filled PTFE flexible laminates for microwave circuit applications, K.P. Murali, S.Rajesh, Om Prakash, A.R.Kulkarni, R.Ratheesh, Composites A, 40  1179-1185 (2009)

  29. Preparation and microwave characterization of BaNd2−xSmxTi4O12 (0 ≤ x ≤ 2) ceramics and their effect on the temperature coefficient of dielectric constant in polytetrafluoroethylene composites, K. Stanley Jacob, R.Satheesh, R.Ratheesh, Mat. Res. Bull, Vol 44 (10), 2022-2026 (2009)

  30.  Preparation, structural and microwave characterization of  Ba3-xSrxYNb3O12 (x=1,2,3) ceramics, S.P. Sithara, S.Rajesh, S.Rajani, K.P. Murali and R.Ratheesh, Scripta Materialia, 59 ( 424-427) 2008


  31. Microwave dielectric properties and vibrational spectroscopic Analysis of MgTe2O5     Ceramics,   G. Subodh, R.Ratheesh, M.V. Jacob and M.T. Sebastian, J. Mater. Res.    Vol. 23 (6),   1-  6(2008)

  32. Microwave dielectric properties of rutile filled PEEK composites, S. Rajesh, K.P. Murali, V. Priyadarsini, S.N.Potty, R.Ratheesh and P. Mohananan, Polymer-Plastic Technology and Engineering, 47(3), 242-246 (2008)

  33. Preparation, Characterization and dielectric properties of temperature stable PEEK/SrTiO3 composites for microwave substrates, V.S. Nisa, S. Rajesh, K.P. Murali, V. Priyadarsini, S.N. Potty and R. Ratheesh, Composite Science & Technology, 68(1), 106-112 (2008) .

  34. Preparation, Characterization and dielectric properties of Ba3-xSrxM4Ti4O21 (M=Nb   Ta and 0≤x≤3)      ceramics,     S.Rajesh, S. Nivas Babu, S.N. Potty and R.Ratheesh, Mater. Lett., 60, 2179 (2006)

  35. Structure and dielectric properties of  Ba1-xSrxZnTi7O16 hollandite ceramics,
    R.Remya, K.P. Murali, S.N.Potty, V.Priyadarshini and R.Ratheesh, J. Electronic Materials, 34(7) 1076(2005)

  36. Microwave dielectric properties of BaO-2CeO2-nTiO2 ceramics

    H.Sreemoolanadhan, M.T. Sebastian, R.Ratheesh, R. Blachnik, M. Woehlecke, B. Schneider, M. Neumann and P.Mohanan, J. Solid State Chem. 177, 3995(2004).

  37. Synthesis and dielectric properties of  MXTi6O17 [M=Ba and Sr, X=Mg and Zn] hollandite   ceramics ,  V.M. Manisha, K.P. Murali, S.N. Potty, V.Priyadarsini and R.Ratheesh, Bull. Mater. Sci.  27(2), 149 (2004)

  38. Preparation, characterization and microwave dielectric properties of  Ba(B’1/2,Nb1/2)O3 [B’=La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Y, Yb & In] ceramics, L. Abdul Kalam, H.Sreemoolanadhan, R.Ratheesh, P.Mohanan and M.T. Sebastian, Mater. Sci. & Eng. B, 107,264 (2004)

  39. Synthesis and dielectric properties of a new class of  MX6Ti6O19[ M=Ba, Sr & Ca; X=Mg & Zn] ceramics, T.M. Preethi and R.Ratheesh, Mater. Lett. 57, 2545 (2003)

  40. Preparation characterisation and properties of BiReWO4 dielectric ceramics
    N. Santha, P. Koshy , R. Ratheesh and M.T. Sebastian. J. Mater. Sci. Mater in Electronics 13 229-233 (2002).

  41. Preparation, Characterization and microwave properties of  RETiNbO6 dielectric ceramics
    M.T.Sebastian, S. Solomon, R.Ratheesh, J. George and P.Mohanan, J. Ame. Cer. Soc., 84 (7) 1487 (2001)

  42. Comparative Raman study of the ordering in Sr(B’0.5 Nb0.5)O3 compound
    R.Ratheesh,   M. Woehlecke, B.Berge, Th. Wahlbrink, H. Haeuseler, E.Ruehl & R. Blachnik,  J. Appl.   Phys. 88(5), 2813 (2000)

  43. Whisphering Gallery Mode microwave characterization of Ba5Nb4O15 and BaCe2Ti5O15
    Ceramics,     R.Ratheesh, M.T. Sebastian, M.E.Tobar, J. Hartnett and D.G. Blair, Mater. Lett. 45, 279  (2000)

  44. Raman spectra of KTP crystal in an in situ electric field
    M.J. Bushiri, V.P. Mahadevan Pillai, R. Ratheesh and V.U. Nayar, J. Phys.  Chem. of Solids, 60, 1983 -1988 (1999)

  45. Whispering Gallery Mode microwave characterisation of Ba(Mg1/3 Ta2/3) O3 Ceramics
    R.Ratheesh, M.T.Sebastian, M.E.Tobar, J. Hartnett and D.G. Blair, J. Phys. D, 32, 2821-26  (1999).

  46. New High Permittivity and low loss ceramic in the BaO-TiO2-Nb2O5 composition
    R.Ratheesh, H. Sreemoolanadhan, M.T.Sebastian and P. Mohanan , J. Mater. Sci.:Materials in  Elect., 9(4) 291 (1998)

  47. The A5B4O15[A=Ba, Sr, Ca, Mg, Zn; B=Nb, Ta] microwave ceramic dielectric resonators
    I.N. Jawahar, M.T. Sebastian, Jacob George, P. Mohananan, H. Sreemoolanadhan and R.Ratheesh,. Bull. Electrochemistry, 14(11) 364 (1998)

  48. Vibrational Spectra of three Aluminium Selenites Al2(SeO3)3.6H2O, Al2(SeO3)3.3H2O
    and   AlH(SeO3)2.3H2O,   R.Ratheesh, G. Suresh, V.U. Nayar and R.E. Morris, Spectrochim Acta 53 A, 1975-1979(1997)

  49.        Samarium Titanium Niobate(SmTiNbO6): A New Microwave Dielectric Ceramic,

           M. T. Sebastian, R. Ratheesh, H. Sreemoolanadhan, Sam Solomon and P.Mohanan, Mater.

           Res. Bull., 32, 1279(1997).


  50. Barium Terbium Niobate: A New Ceramic microwave dielectric resonator, H. Sreemoolanadhan, R.Ratheesh, M.T.Sebastian and P. Mohanan, Mater. Lett. 33, 161-165, 1997

  51. Vibrational analysis of   Ba5-xSrxNb4O15 microwave dielectric ceramic resonators, R. Ratheesh, H. Sreemoolanadhan, and M. T. Sebastian, J. Solid State Chem. 131,2(1997).                                               


  52. The synthesis and characterisation of Hf-substituted (Zr0.8, Sn0.2)TiO4,H. Sreemoolanadhan, R.Ratheesh, M. T. Sebastian and P. Mohanan, J. Phys. D: Appl.Phys., 30, 1809 (1997).

  53. Preparation, Characterisation and Dielectric Properties of Ceramics in the BaO-Nd2O3-TiO2  
    Systems, R.Ratheesh, H. Sreemoolanadhan, M.T. Sebastian and P. Mohanan, Ferroelectrics,   211, PP1-8 (1997)

  54. Vibrational spectra of NH4Sm(SO4)2.4H2O and (NH4)2Ln(SO4)2.4H2O[Ln=Yb,Tm),
    G.Suresh, R.Ratheesh, K.Manoj Kumar and V.U.Nayar, J. Solid State Chem.,121, 408-414 (1996)

  55. Infrared  and Polarized Raman spectra of RbAl(SO4)2.12H2O Single crystals, G.Suresh,  R.Ratheesh, T.Pradeep,R.S.Jayasree, V.U.Nayar and G.Keresztury, J. Solid State Chem.,  122, 333-337 (1996).

  56. Vibrational analysis of Cu(HSeO3)2.H2O single crystal, R.Ratheesh, G. Suresh, M.J.Bushiri and V. U. Nayar, Spectrochim Acta. A52, 1313(1996)

  57. Vibrational Analysis of NaM2(OH)(H2O)(MoO4)2[M= Ni, Zn], R.Ratheesh, G.Suresh and V.U.Nayar , Pramana, 44, 5, 1995.

  58. IR and Polarized Raman spectra of a single crystal; Rb3H(SeO4)2 in the ferroelastic phase, G.Suresh, R.Ratheesh,V.U.Nayar, M.Ichikawa and G.Keresztury,  Spectrochimica Acta, 51A, 3, 1995.

  59. Infrared and Polarized Raman spectra of  M6[TeMo6O24].7H2O  [M=K and NH4] and (NH4)6[TeMo6O24].Te(OH)6.7H2O single crystals, R.Ratheesh, G.Suresh and V.U.Nayar , J. Solid State Chemistry, 118, 341, 1995.

  60. Infrared and Polarized Raman spectra of  Cu(HSeO3)2.H2O single  Crystals, R.Ratheesh, G.Suresh, M.J.Bushiri and V.U.Nayar, Spectrochimica Acta , 51A ,1509,1995

  61. IR and Raman spectra of LaH(SeO3)2 and FeH(SeO3)2
    R.Ratheesh, G.Suresh, V.U.Nayar, G. Giester and R.E .Morris,  Indian J. Phys.,  69B(4),307-313, 1995.


  62. Spectroscopic investigation of a single crystal K3H(SeO4)2, G.Suresh, R.Ratheesh, V.U.Nayar and M.Ichikawa,Ferroelectrics,  173, 257 (1995).

  63. Raman spectroscopic investigations on the phase transitions in Rb3H(SeO4)2  and  Rb3D(SeO4)2   single crystals ,   G.Suresh, R.Ratheesh, V.U.Nayar and M.Ichikawa,Spectrochimica Acta., A52, 465 (1995)

  64. Vibrational Analysis of Cu(HSeO3)2.H2O Single Crystal at Room and Liquid Nitrogen Temperatures,   R.Ratheesh, G. Suresh, M.J.Bushiri and V.U.Nayaer, Ind. J. Cryog., 20(1), 17(1995)

  1.  Preparation and Characterization of High Permittivity SrTiO3 filled PTFE Composites for Microwave  Substrate Applications, S. Rajesh, K.P. Murali, K.V.Rajani, R. Ratheesh, Int. Journal of Applied Ceramic Technology, 6, 553-561(2009)