Inventor

Pranab Bagchi

Inventor

Webster, NY, US

Overview

1989–1999

Patent span

Physics

Primary field (CPC G)

Patents· 49 as inventor

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

G03Cprimary

G03CPhotosensitive materials for photographic purposes42%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests30%

A61KPreparations for medical, dental or toiletry purposes4%

B82YSpecific uses or applications of nanostructures3%

B41JTypewriters2%

C08HDerivatives of natural macromolecular compounds2%

C09HPreparation of glue or gelatine2%

C09KMaterials for miscellaneous applications, not provided for elsewhere2%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices2%

Y10TTechnical subjects covered by former us classification2%

PatentTitleYear

5,916,358'Ink compositions containing surfactant sols comprising mixtures of solid surfactants'1999 5,896,155'Ink transfer printing apparatus with drop volume adjustment'1999 5,741,633'Attachment of gelatin-grafted polymer particles to pre-precipitated silver halide grains'1998 5,726,693'Ink printing apparatus using ink surfactants'1998 5,716,642'Microprecipitation of nanoparticulate pharmaceutical agents using surface active material derived from similar pharmaceutical agents'1998 5,693,461'Mixed packet color photographic system'1997 5,665,331'Co-microprecipitation of nanoparticulate pharmaceutical agents with crystal growth modifiers'1997 5,662,883'Microprecipitation of micro-nanoparticulate pharmaceutical agents'1997 5,610,002'Photographic composition containing a thickening agent'1997 5,591,568'High dye stability, high activity, low stain and low viscosity small particle yellow dispersion melt for color paper and other photographic systems'1997 5,565,309'Oxygen barrier coated photographic agent milled dispersion particles for enhanced dye-stability'1996 5,560,932'Microprecipitation of nanoparticulate pharmaceutical agents'1996 5,543,283'Attachment of gelatin-grafted plymer particles to pre-precipitated silver halide grains'1996 5,536,630'Use of acid processed ossein gelatin and chain-extended acid processed ossein gelatin as peptizers in the preparation of photographic elements'1996 5,503,972'Gelatin-grafted-polymer particles as peptizer for silver halide emulsions'1996 5,491,052'Yellow layer for color photographic elements'1996 5,441,865'Gelatin-grafted-polymer particles as peptizer for silver halide emulsions'1995 5,426,020'Pressure sensitivity relief for photographic products'1995 5,399,480'Attachment of gelatin-grafted polymer particles to pre-precipitated silver halide grains'1995 5,397,695'Attachment of compounds to polymeric particles using carbamoylonium compounds and a kit containing same'1995 5,395,748'Ballasted optical brighteners'1995 5,393,650'Pressure sensitivity relief for photographic products'1995 5,385,812'Continuous manufacture of gelled microprecipitated dispersion melts'1995 5,378,598'Use of acid processed ossein gelatin and chain-extened acid processed ossein gelatin as peptizers in the preparation of photographic emulsions'1995 5,370,966'Surfactant dye-diffusion-transfer facilitating thermal solvents for image separation systems'1994 5,366,842'Oxygen barrier coated photographic coupler dispersion particles for enhanced dye-stability'1994 5,358,831'High dye stability, high activity, low stain and low viscosity small particle yellow dispersion melt for color paper and other photographic systems'1994 5,318,889'Use of chain-extended acid processed ossein gelatin in the preparation of photographic elements'1994 5,300,418'Viscosity control of photographic melts'1994 5,279,931'Polymer co-precipitated coupler dispersion'1994 5,264,317'Oxygen barrier coated photographic coupler dispersion particles for enhanced dye-stability'1993 5,252,425'Hard copy imaging system'1993 5,248,558'Case-hardened gelatin-grafted polymer particles'1993 5,185,230'Oxygen barrier coated photographic coupler dispersion particles for enhanced dye-stability'1993 5,182,189'Increased photographic activity precipitated coupler dispersions prepared by coprecipitation with liquid carboxylic acids'1993 5,158,863'Methods of forming stable dispersions of photographic materials'1992 5,135,844'Preparation of low viscosity small particle photographic dispersions in gelatin'1992 5,104,776'Increased photographic activity precipitated coupler dispersions prepared by coprecipitation with liquid carboxylic acids'1992 5,091,296'Polymer co-precipitated coupler dispersion'1992 5,089,380'Methods of preparation of precipitated coupler dispersions with increased photographic activity'1992 5,066,572'Control of pressure-fog with gelatin-grafted and case-hardened gelatin-grafted soft polymer latex particles'1991 5,055,379'Photoresist dichromate composition containing gelatin coated particles'1991 5,026,632'Use of gelatin-grafted and case-hardened gelatin-grafted polymer particles for relief from pressure sensitivity of photographic products'1991 5,013,640'Preparation of low viscosity small-particle photographic dispersions in gelatin'1991 4,990,431'Methods of forming stable dispersions of photographic materials'1991 4,970,139'Methods of preparation of precipitated coupler dispersions with increased photographic activity'1990 4,933,270'Process for the precipitation of stable colloidal dispersions of base degradable components of photographic systems in the absence of polymeric steric stabilizers'1990 4,920,004'Gelatin-grafted polymer particles'1990 4,855,219'Photographic element having polymer particles covalently bonded to gelatin'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1999Patents assigned to EASTMAN KODAK CO (45)· patent assignee history

1989–1999Based in Webster, NY, US· patent location history

1996–1998Patents assigned to NANO SYS LLC (2)· patent assignee history

1997Patents assigned to NANOSYSTEMS LLC (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
EASTMAN KODAK CO	45	1989–1999
NANO SYS LLC	2	1996–1998
NANOSYSTEMS LLC	2	1997

Locations

Location	Patents	Span
Webster, New York, US	49	1989–1999