For Further Information Please Contact

Head, Chemial Lab
Tel: +91 44 2441 1630
Fax: +91 44 2491 2150
Email: jrrao@clri.res.in

Patents

Granted
  1. Inventors: Sreeram, K. J.; Shrivastava, H. Y.; Nair, B. U.; Ramasami, T.; Varadaraju, U. V.; Speeram, K. J.; Upadhyayula, V. V. Title: Preparation of cerium sulfide compound useful in pigments, by treating trivalent cerium salt with culture broth of sulfate-reducing bacteria under inert atmosphere, concentrating resultant biomass and treating biomass followed by separation Number: US2007131143-A1; WO2007066351-A1; US7247291-B2
  2. Inventors: Sreeram, K. J.; Nair, B. U.; Ramasami, T. Title: Preparation of inorganic colorants by homogenizing mixed rare earth compounds such as oxide, carbonate, nitrate, fluoride, chloride of rare earth elements optionally mixed with a compound of metal ion, and heating the homogenate. Number: WO2006067799-A1
  3. Inventors: Kalarical, J. S.; Nair, B. U.; Thirumalachari, R. Title: Preparation of inorganic colorants of varying hues and colors for use in colorant industry involves homogenizing mixed rare earth compounds with metal ions, heating the homogenate, followed by cooling and reduction of particle size. Number: US2006140830-A1; US7279036-B2
  4. Inventors: Sreeram, K. J.; Ramasami, T.; Kalarical, J. S.; Thirumalachari, R. Title: Simultaneous recovery of chromium and iron from chromite ore processing residue involves subjecting grog obtained by treating residue with metal hydroxide to aqueous leaching and forming chromate solution and iron rich residue. Number: US2004086438-A1; WO2004040027-A1; AU2003272008-A1; IN200201093-I1; GB2409676-A; CN1708595-A; ZA200503141-A; GB2409676-B; US7220394-B2
  5. Inventors: Palanisamy, T.; Rao, J. R.; Nair, B. U.; Thirumalachari, R. Title: An eco-friendly bioprocess for leather processing. Number:US6708531, 2004; EP1565584, 2005; CN1708590, 2005; WO2004040021, 2004; AU2003274440, 2004, IN242841, 2010.
  6. Inventors: Subramani, S.; Palanisamy, T.; Rao, J. R.; Nair, B. U.; Thirumalachari, R. Title: Dehairing and fibre opening for complete elimination of lime and sodium sulphide. Number: US6957554, 2005; WO2005049871, 2005; AU2003280066, 2005; KR1020060117339, 2006, IN238963, 2010.(Commercialized)
  7. Inventors: Subramani, S.; Palanisamy, T.; Rao, J. R.; Bangaru, C.; Nair, B. U.; Thirumalachari, R. Title: Transposed process for making leather. Number: US7033402, 2006; EP1697548, 2006; BR0318684, 2006; AU2003298467, 2005; KR1020060127416, 2006, IN225353, 2008.
  8. Inventors: Chandrabose, M.; Fathima, N. N.; Kalarical, J. S.; Rao, J. R.; Nair, B. U.; Thirumalachari, R. Title: Process for making wet pink. Number:WO2006067540-A1, 2006 ; CN101111611-A, 2008 ; IN247593-B, 2011; US7252687-B2, 2007
  9. Inventors: Kanthimathi, M.; Thanikaivelan, P.; Rao, J. R.; Nair, B. U.; Thirumalachari, R. Title: Process for the preparation of a formaldehyde free synthetic tanning agent. Number: US7118603, 2006, EP1656460, 2006; AU2003250493, 2005, IN197556, 2008.(Commercialized)
  10. Inventors: Kanthimathi, M.; Thanikaivelan, P.; Rao, J. R.; Nair, B. U.; Thirumalachari, R. Title: Process for the preparation of a synthetic aluminium tanning agent. Number: US7169191, 2007; WO2004057036, 2004; EP1576196, 2005; CN1720337, 2006; AU2002348767, 2007, IN221968, 2008.
  11. Inventors: Nataraj P.; Subramani, S.; Rathinam,A.; Kalarical, J. S.; Rao, J. R.; Nair, B. U.; Thirumalachari, R. Title: A process for the preparation of novel synthetic tanning agent. Number: US2008229511-A1, 2008; DE102007051378-A1, 2008; CN101270397-A, 2008; IN200700648-I1, 2008; IT1383884-B, 2010.
  12. Inventors:Subramani, S.; Palanisamy, T.; Rao, J. R.; Bangaru, C.; Nair, B. U.; Thirumalachari, R. Title: Process for the preparation of bio-tanning agent. Number: EP1844107, 2007; CN101090946, 2007; US20060137103, 2006, IN244982, 2010.
  13. Inventors: Rao, J. R.; Kalarical, J. S.; Palanisamy, T.; Nair, B. U.; Ramasami, T. Title: A process for the preparation of novel chromium-iron complex for use in leather industry. Number: IN216560, 2008.
  14. Inventors: Palanisamy, T.; Rao, J.R.; Kanthimathi, M.; Nair, B. U.; Thirumalachari, R. Title: An improved process for the preparation of a tanning agent. Number: IN217687, 2008.
  15. Inventors: Palanisamy, T.; Rao, J.R.; Nair, B. U.; Thirumalachari, R. Title: A novel three step bioprocess in leather processing, Number: IN225351, 2008.
  16. Inventors: Kalarical, J. S.; Mookandi, K.; Rao, J. R.; Ramasubbu, S.; Nair, B. U.; Thirumalachari, R. Title: Process for preparation of novel organometallic polymeric matrix useful as tanning agent. Number: IN215050, 2008.
  17. Inventors: Palanisamy, T.; Subramani, S.; Rao, J. R.; Bangaru, C.; Nair, B. U.; Thirumalachari, R. Title: An improved process for dehairing and fibre opening of hide/skin. Number: CN101484591, 2009; WO2008093353, 2008; DE1120070018275, 2007, 197/DEL/2007, (2005). (Commercialized)
  18. Inventors: Palanisamy, T.; Thiruvilan, A.M.; Bangaru, C.; Rao, J. R.;Nair, B. U. Title: A process for the preparation of a mixture of carbonaceous products from proteinaceous materials. Number:WO2009016649, 2009, India Patent published,1625/DEL/2007
  19. Inventors:Kanthimathi, M.; Thanikaivelan, P.; Kalarical, J. S.; Rao, J. R.; Sundaram, R.; Nair, B. U.; Thirumalachari, R. Title: A process for the preparation of a novel synthetic tanning agent. Number: IN244012, 2010 (Commercialized)
  20. Inventors: Subramani, S.; Palanisamy, T.; Rao, J. R.; Nair, B. U.; Thirumalachari, R. Title: Bio-tanning process for leather making. Number: US7651531, 2010, IN244713, 2010.
  21. Inventors: Subramani, S.; Rao, J. R.; Nair, B. U. Title: An improved ecofriendly process for curing of hides and skins. Number: IN200801491-I1, 2010.

Applied

  1. Inventors: Sundar, J.; Gnanamani, A.; Rao, J. R.; Muralidharan, C.; Babu, N. K. C.;Mandal, A. B. Title: An improved denture substrate composition and a process for the preparation thereof. Number: India (Indian Patent application no. 0081DEL2012)
  2. Inventors: Sangeetha, S; Sreeram, KJ; Raghava Rao, J; Balachandran Unni Nair . Title: A condensate of amino resin with polysaccharide and/or polyphenol and a process for preparation thereof. Number: India (Indian Patent application no. 0081DEL2012)
  3. Inventors: CG Jayakumar, KJ Sreeram, Aruna Dhathathreyan, J Raghava Rao, Usha Ramamurthy, B U Nair . Title: An improved post tanning process for leather. Number: India (Indian Patent application no. 3812DEL2013)
  4. Inventors: KJ Sreeram, S Sangeetha, CG Jayakumar, J Raghava Rao, Usha Ramamurthy, B U Nair. Title: A novel melamine-chrome complex for leather processing and a process for the preparation there of. Number: India (Indian Patent application no. 0937DEL2014)
  5. Inventors: M Ami, CG Jayakumar, NN Fathima, B Madhan, J Raghava Rao, B U Nair. Title: A process for fibre opening in leather making. Number: India (Indian Patent application no. 1005DEL2014)
  6. Inventors: R Sathya, KJ Sreeram, J Raghava Rao, B U Nair. Title: A novel organo-metallic colorant for leather and a process for the preparation thereo. Number: India (Indian Patent application no. 2727DEL2014)
  7. Inventors: M Sathish, KJ Sreeram, B Madhan, J Raghava Rao, B U Nair. Title: An improved tanning process. Number: India (Indian Patent application no. 2704DEL2014)
  8. Inventors: M Sathish, J Raghava Rao, B U Nair. Title: A novel retanning agent and a process for the preparation thereof. Number: India (Indian Patent application no. 2509DEL2014)
  9. Inventors: S Silambarasan, CG Jayakumar, P Thanikaivelan, KJ Sreeram, J Raghava Rao, B U Nair. Title: Tanning of skins and hides in green medium. Number: India (Indian Patent application no.1786DEL2014)

Of the 21 patents granted to the laboratory during the last 6 years, know-how related to 4 patents have been translated

For Further Information Please Contact

Head, Chemial Lab
Tel: +91 44 2441 1630
Fax: +91 44 2491 2150
Email: jrrao@clri.res.in