Inventor

Ratan K. Chaudhuri

Inventor

Butler, NJ, US

Overview

1987–2021

Patent span

Human necessities

Primary field (CPC A)

Patents· 77 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

A61Kprimary

A61KPreparations for medical, dental or toiletry purposes21%

A61QSpecific use of cosmetics or similar toiletry preparations21%

A01NPreservation of bodies of humans or animals or plants or parts thereof12%

C07DHeterocyclic compounds11%

C07CAcyclic or carbocyclic compounds6%

C11DDetergent compositions6%

B65HHandling thin or filamentary material, e.g. sheets, webs, cables3%

D06MTreatment, not provided for elsewhere in class d06, of fibres, threads, yarns, fabrics, feathers or fibrous goods made from such materials3%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds3%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations2%

PatentTitleYear

11,077,035Hair treatment compositions and methods2021 10,828,241Skin lightening compositions and methods2020 10,597,402Compositions and methods for restoring epidermal integrity and function and treating dermatological diseases2020 10,568,819Skin enhancing compositions and methods2020 9,636,321'Compositions and methods for treating psoriasis'2017 8,859,021'Skin appearance through gene manipulation'2014 8,617,528'Compositions and methods for stabilizing ingredients using 2,4-pentanedione compounds'2013 8,529,967'Sunscreen compositions and methods'2013 8,496,917'Compositions and methods for improving skin appearance'2013 8,414,870'Benzylidene substituted 2,4-pentanedione compounds and use thereof as stabilizers'2013 8,003,082'Photostable organic sunscreen composition'2011 7,264,795'Sunscreen composition'2007 7,166,273'Photo stable organic sunscreen compositions'2007 7,150,876'Methods for stabilizing ingredients within cosmetics, personal care and household products'2006 6,969,509'Skin-lightening'2005 6,936,735'Photostable cationic organic sunscreen compounds and compositions obtained therefrom'2005 6,831,191'Photo stable organic sunscreen compounds with antioxidant properties and compositions obtained therefrom'2004 6,699,463'Photostable cationic organic sunscreen compounds with antioxidant properties and compositions obtained therefrom'2004 6,649,150'Skin-lightening'2003 6,602,515'Photo stable organic sunscreen compounds with antioxidant properties and compositions obtained therefrom'2003 6,165,450'Sprayable sunscreen compositions'2000 6,008,359'Piperidine antioxidants and compositions therewith for preventing the fading of artificial hair dye'1999 5,922,310'Compositions for preventing the fading of artificial hair dye'1999 5,830,441'Photostable UV absorbent containing A-cyano cinnamyl moiety'1998 5,817,319'Free-flowing, non-dusting water dispersible granules having low friability and superior crush strength which are capable of forming stable suspensions in water without deleterious foaming'1998 5,736,128'Cosmetic composition for rejuvenation of skin without skin irritation'1998 5,731,450'Oil adduct conditioners'1998 5,679,366'Pesticide or herbicide polymer complexes for forming aqueous dispersions'1997 5,645,859'Process 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 loading'1997 5,626,858'Pesticide or herbicide polymer complexes for forming aqueous dispersions'1997 5,527,947'Process for preparation of cinnamate sunscreen agents'1996 5,492,989'Charge imbalanced polyelectrolyte composition'1996 5,476,662'Pesticide or herbicide polymer complexes for forming aqueous dispersions'1995 5,470,508'Aqueous oil removal composition containing higher-alkyl pyrrolidone'1995 5,451,394'Quaternary salts of para-dialkylamino benzamide derivatives'1995 5,427,773'Quaternary salts of dialkylaminobenzamides'1995 5,427,774'Heterocyclic quaternary salts of para-dialkylamino benzamide derivatives'1995 5,424,072'Water soluble wetting agent for pesticide formulations'1995 5,385,948'Alkoxyalkyl lactams as solvents for macro and microemulsions'1995 5,384,406'Water-soluble biologically active ammonium salts'1995 5,354,726'Delivery system for agricultural chemicals'1994 5,322,898'Alkyl vinyl ether polymers containing a lactam functionality'1994 5,294,644'Surface active lactams'1994 5,283,229'Delivery system for agricultural chemicals'1994 5,283,228'Leaching inhibition of crop treating chemicals with amino containing polymers'1994 5,250,499'Delivery system for agricultural chemicals'1993 5,244,974'Alkyl vinyl ether polymers containing a lactam functionality'1993 5,231,070'Leaching inhibition of crop treating chemicals with lactam containing polymers'1993 5,229,354'Leaching inhibition of crop treating chemicals with nitrogen containing polymers'1993 5,229,355'Leaching inhibition of crop treating chemicals with polymers'1993 5,223,580'Process for making a charge imbalanced polymer'1993 5,221,791'Water-soluble biologically active ammonium salts'1993 5,208,295'Charge imbalanced polyelectrolyte composition'1993 5,176,736'Delivery system for agricultural chemicals'1993 5,160,528'Delivery system for agricultural chemicals'1992 5,156,666'Delivery system for agricultural chemicals'1992 5,156,837'Cosmetic compositions containing quaternized nitrogen compounds'1992 5,157,126'Preparation of a solution of stearamidopropyl dimethyl pyrrolidonyl methyl ammonium chloride in a polyhydric alcohol'1992 5,110,585'Quaternized nitrogen containing polycyclic compounds'1992 5,093,031'Surface active lactams'1992 5,071,463'Delivery system for agricultural chemicals'1991 5,066,709'Bioadhesive composition'1991 5,055,046'Bioadhesive composition'1991 5,011,941'Quaternized nitrogen containing compounds'1991 5,008,104'Quaternized nitrogen containing compounds'1991 4,980,419'Alkyl vinyl ether polymers containing a lactam functionality'1990 4,910,247'Adhesive composition'1990 4,886,890'Diquarternary nitrogen compounds'1989 4,883,655'Quaternized nitrogen containing polycyclic compounds'1989 4,848,377'Article for permanent structure alteration of hair'1989 4,837,013'Quaternized nitrogen containing compounds'1989 4,834,970'Cosometic compositions containing quaternized nitrogen containing compound'1989 4,830,850'Quaternized nitrogen containing compounds'1989 4,808,569'Fragrance additive'1989 4,732,990'Quaternized nitrogen containing compounds'1988 4,719,287'Higher alkyl pyrrolidone extractants for water soluble phenolic or carboxylic antibiotics'1988 4,713,463'Synthesis of n-epoxypropyl lactams'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1989Patents assigned to GAF CORP (10)· patent assignee history

1987–1998Based in Butler, NJ, US· patent location history

1990–1991Patents assigned to GAF CHEMICALS CORP (5)· patent assignee history

1991–1999Patents assigned to ISP INVESTMENTS INC (36)· patent assignee history

1997–2021Based in Lincoln Park, NJ, US· patent location history

2013–2021Patents assigned to SYTHEON LTD (9)· patent assignee history

2013–2014Patents assigned to CHAUDHURI RATAN K (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ISP INVESTMENTS INC	36	1991–1999
GAF CORP	10	1987–1989
SYTHEON LTD	9	2013–2021
CHAUDHURI RATAN Kself	5	2013–2014
GAF CHEMICALS CORP	5	1990–1991

Locations

Location	Patents	Span
Butler, New Jersey, US	50	1987–1998
Lincoln Park, New Jersey, US	27	1997–2021