Inventor
Louis E. Friedrich
Inventor
Rochester, NY, US
Overview
Patents· 23 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Cprimary
G03CPhotosensitive materials for photographic purposes61%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests34%
C07DHeterocyclic compounds5%
PatentTitleYear
7,455,959'Photographic element containing a speed-enhancing compound'20087,354,701'Photographic element with speed-enhancing compound'20087,175,975'Photographic material with improved development inhibitor releases'20077,108,964'Compound containing an anthranilic acid blocking group'20066,887,656'Color photographic element containing improved heterocyclic speed enhancing compound'20056,589,724'Color photographic element containing speed-improving benzotriazole polymer'20036,569,612'Photographic element containing a high-dye-yield coupler for producing a yellow hue'20036,455,242'Color photographic element containing speed improving compound'20026,440,653'Method of producing a photographic image'20026,319,660'Color photographic element containing speed improving compound'20016,309,811'Color photographic element containing nitrogen heterocycle derivative and inhibitor releasing coupler'20016,228,572'Color photographic element containing ballasted mercaptodiazole derivative and inhibitor releasing coupler'20016,197,488'Color photographic element containing a coupler releasing derivative with at least three heteroatoms with specific hydrophobicity'20016,190,849'Photographic element containing ballasted tetrazole derivative and inhibitor releasing coupler'20016,190,848'Color photographic element containing ballasted triazole derivative and inhibitor releasing coupler'20016,140,029'Color photographic element containing elemental silver and nitrogen heterocycle in a non-light sensitive layer'20006,110,657'Photographic recording material for accelerated development'20006,054,257'Photographic element containing particular coupler and inhibitor releasing coupler'20006,043,013'Color photographic element containing elemental silver and heterocyclic thiol in a non-light sensitive layer'20005,985,532'Photographic element containing an improved pyrozolotriazole coupler'19995,681,691'Photographic element containing an improved pyrazolotriazole coupler'19975,455,141'Photographic elements containing blocked dye moieties'19955,354,650'Photographic elements containing release compounds'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2008Patents assigned to EASTMAN KODAK CO (23)· patent assignee history
1994–2008Based in Rochester, NY, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| EASTMAN KODAK CO | 23 | 1994–2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Rochester, New York, US | 23 | 1994–2008 |