Inventor · disambiguated record
Ratan K. Chaudhuri
Also filed as: CHAUDHURI RATAN · CHAUDHURI RATAN C · CHAUDHURI RATAN K
87 granted patents·23 pending applications·1,471 citations·filing 1986–2024
99Inventor score
Top patents by PatentIndex Score
110 records- 0198US5093031ASurface active lactamsISP INVESTMENTS INC·Filed 1988·Granted Mar 3, 1992·105 cites·2 claims
- 0297US4910247AAdhesive compositionGAF CHEMICALS CORP·Filed 1989·Granted Mar 20, 1990·114 cites·16 claims
- 0396US10597402B2Compositions and methods for restoring epidermal integrity and function and treating dermatological diseasesSYTHEON LTD·Filed 2016·Granted Mar 24, 2020·9 cites·25 claims
- 0493US5294644ASurface active lactamsISP INVESTMENTS INC·Filed 1991·Granted Mar 15, 1994·107 cites·6 claims
- 0593US5071463ADelivery system for agricultural chemicalsISP INVESTMENTS INC·Filed 1989·Granted Dec 10, 1991·51 cites·2 claims
- 0692US8529967B2Sunscreen compositions and methodsCHAUDHURI RATAN K·Filed 2011·Granted Sep 10, 2013·6 cites·20 claims
- 0791US11077035B2Hair treatment compositions and methodsSYTHEON LTD·Filed 2018·Granted Aug 3, 2021·2 cites·31 claims
- 0891US10568819B2Skin enhancing compositions and methodsSYTHEON LTD·Filed 2017·Granted Feb 25, 2020·4 cites·25 claims
- 0990US9636321B2Compositions and methods for treating psoriasisSYTHEON LTD·Filed 2016·Granted May 2, 2017·5 cites·21 claims
- 1090US8496917B2Compositions and methods for improving skin appearanceCHAUDHURI RATAN K·Filed 2010·Granted Jul 30, 2013·17 cites·18 claims
- 1189US7166273B2Photo stable organic sunscreen compositionsEMD CHEMICALS INC·Filed 2003·Granted Jan 23, 2007·24 cites·136 claims
- 1289US7150876B2Methods for stabilizing ingredients within cosmetics, personal care and household productsMERCK PATENT GMBH·Filed 2005·Granted Dec 19, 2006·29 cites·58 claims
- 1389US6602515B2Photo stable organic sunscreen compounds with antioxidant properties and compositions obtained therefromEM IND·Filed 2001·Granted Aug 5, 2003·28 cites·34 claims
- 1489US5354726ADelivery system for agricultural chemicalsISP INVESTMENTS INC·Filed 1993·Granted Oct 11, 1994·46 cites·59 claims
- 1589US5283229ADelivery system for agricultural chemicalsISP INVESTMENTS INC·Filed 1991·Granted Feb 1, 1994·49 cites·47 claims
- 1688US8617528B2Compositions and methods for stabilizing ingredients using 2,4-pentanedione compoundsCHAUDHURI RATAN K·Filed 2011·Granted Dec 31, 2013·3 cites·14 claims
- 1788US6699463B2Photostable cationic organic sunscreen compounds with antioxidant properties and compositions obtained therefromEM IND·Filed 2002·Granted Mar 2, 2004·22 cites·54 claims
- 1888US5830441APhotostable UV absorbent containing A-cyano cinnamyl moietyISP INVESTMENTS INC·Filed 1998·Granted Nov 3, 1998·47 cites·23 claims
- 1988US5160528ADelivery system for agricultural chemicalsISP INVESTMENTS INC·Filed 1990·Granted Nov 3, 1992·43 cites·13 claims
- 2087US6831191B2Photo stable organic sunscreen compounds with antioxidant properties and compositions obtained therefromEM IND·Filed 2001·Granted Dec 14, 2004·22 cites·93 claims
- 2186US7264795B2Sunscreen compositionMERCK PATENT GMBH·Filed 2002·Granted Sep 4, 2007·38 cites·20 claims
- 2286US6936735B2Photostable cationic organic sunscreen compounds and compositions obtained therefromEMD CHEMICALS INC·Filed 2002·Granted Aug 30, 2005·18 cites·50 claims
- 2385US12171852B1Composition and methods for regulating melanogenesisSYTHEON LTD·Filed 2024·Granted Dec 24, 2024·0 cites·21 claims
- 2485US11753415B2Compositions and methods for treating atopic dermatitisSYTHEON LTD·Filed 2023·Granted Sep 12, 2023·0 cites·24 claims
- 2584US11753414B2Compositions and methods for treating atopic dermatitisSYTHEON LTD·Filed 2023·Granted Sep 12, 2023·0 cites·24 claims
- 2684US8414870B2Benzylidene substituted 2,4-pentanedione compounds and use thereof as stabilizersCHAUDHURI RATAN K·Filed 2011·Granted Apr 9, 2013·3 cites·20 claims
- 2782US5736128ACosmetic composition for rejuvenation of skin without skin irritationISP INVESTMENTS INC·Filed 1996·Granted Apr 7, 1998·69 cites·14 claims
- 2881US10828241B2Skin lightening compositions and methodsSYTHEON LTD·Filed 2019·Granted Nov 10, 2020·1 cites·19 claims
- 2981US4883655AQuaternized nitrogen containing polycyclic compoundsGAF CORP·Filed 1987·Granted Nov 28, 1989·16 cites·18 claims
- 3080US12012416B2Compositions and methods for treating atopic dermatitisSYTHEON LTD·Filed 2022·Granted Jun 18, 2024·0 cites·25 claims
- 3180US6649150B2Skin-lighteningEM IND·Filed 2002·Granted Nov 18, 2003·10 cites·26 claims
- 3278US8859021B2Skin appearance through gene manipulationCHAUDHURI RATAN K·Filed 2008·Granted Oct 14, 2014·3 cites·16 claims
- 3378US6165450ASprayable sunscreen compositionsEM IND INC·Filed 1999·Granted Dec 26, 2000·51 cites·42 claims
- 3478US5156666ADelivery system for agricultural chemicalsISP INVESTMENTS INC·Filed 1990·Granted Oct 20, 1992·24 cites·16 claims
- 3577US11759433B2Compositions and methods for regulating the endocannabinoid systemSYTHEON LTD·Filed 2022·Granted Sep 19, 2023·0 cites·20 claims
- 3676US8003082B2Photostable organic sunscreen compositionMERCK PATENT GMBH·Filed 2004·Granted Aug 23, 2011·4 cites·37 claims
- 3775US11510885B2Compositions and methods for regulating the endocannabinoid systemSYTHEON LTD·Filed 2020·Granted Nov 29, 2022·0 cites·25 claims
- 3875US6969509B2Skin-lighteningEMD CHEMICALS INC·Filed 2003·Granted Nov 29, 2005·6 cites·23 claims
- 3974US5231070ALeaching inhibition of crop treating chemicals with lactam containing polymersISP INVESTMENTS INC·Filed 1992·Granted Jul 27, 1993·18 cites·26 claims
- 4074US5229354ALeaching inhibition of crop treating chemicals with nitrogen containing polymersISP INVESTMENTS INC·Filed 1992·Granted Jul 20, 1993·19 cites·19 claims
- 4174US5221791AWater-soluble biologically active ammonium saltsISP INVESTMENTS INC·Filed 1991·Granted Jun 22, 1993·12 cites·3 claims
- 4272US11312725B2Compositions and methods for restoring epidermal integrity and function and treating dermatological diseasesSYTHEON LTD·Filed 2020·Granted Apr 26, 2022·0 cites·20 claims
- 4372US5476662APesticide or herbicide polymer complexes for forming aqueous dispersionsISP INVESTMENTS INC·Filed 1992·Granted Dec 19, 1995·13 cites·3 claims
- 4471US5626858APesticide or herbicide polymer complexes for forming aqueous dispersionsISP INVESTMENTS INC·Filed 1995·Granted May 6, 1997·13 cites·13 claims
- 4570US5385948AAlkoxyalkyl lactams as solvents for macro and microemulsionsISP INVESTMENTS INC·Filed 1993·Granted Jan 31, 1995·15 cites·26 claims
- 4669US5645859AProcess for producing an alpha or beta-hydroxy acid-vinylpyrrolidone polymer, copolymer or graft polymer complex in the form of free-flowing powders having a high acid loadingISP INVESTMENTS INC·Filed 1995·Granted Jul 8, 1997·32 cites·17 claims
- 4769US5176736ADelivery system for agricultural chemicalsISP INVESTMENTS INC·Filed 1991·Granted Jan 5, 1993·15 cites·10 claims
- 4869US4732990AQuaternized nitrogen containing compoundsGAF CORP·Filed 1986·Granted Mar 22, 1988·28 cites·9 claims
- 4967US2007231285A1Method for regulating the appearance of skin containing combination of skin care activesCHAUDHURI RATAN K·Filed 2007·Application pending·0 cites
- 5066US11759434B2Methods and compositions for treating melanoma and non-melanoma skin cancersSYTHEON LTD·Filed 2023·Granted Sep 19, 2023·0 cites·21 claims
Showing the top 50 of 110 patent records by PatentIndex Score.
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