Inventor

Reiichi Ohi

Inventor

Minami-ashigara, JP

Overview

18→

Patents

1976–1991

Patent span

Physics

Primary field (CPC G)

Patents· 18 as inventor

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

G03Cprimary

G03CPhotosensitive materials for photographic purposes67%

C07DHeterocyclic compounds13%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%

C07CAcyclic or carbocyclic compounds4%

G01TMeasurement of nuclear or x-radiation4%

PatentTitleYear

5,017,466'Color-forming aminopyrimidine couplers and silver halide color photographic light-sensitive materials containing the coupler'1991 4,105,452'Multi-layered color photographic light-sensitive material'1978 4,054,580'Process for producing 2,2,4-trimethyl-6-hydroxy-7-substituted chromans'1977 4,054,458'Gelatino silver halide photosensitive material'1977 4,021,248'Color photographic light-sensitive material'1977 4,009,038'Silver halide color photographic materials'1977 4,002,480'Photographic silver halide emulsion'1977 3,994,733'Silver halide photographic emulsion'1976 3,982,044'Silver halide photographic emulsions used for electron beam recording'1976 3,975,395'Aryl-tetrazol-5-ylthio- and thioether-substituted hydroquinone compounds'1976 3,960,570'Color photographic silver halide light-sensitive materials'1976 3,960,568'Photographic material containing fine silver halide particles and hydroxylamino substituted triazine or pyrimidine sensitizers'1976 3,957,491'Silver halide photographic material containing an organic compound having a covalent nitrogen-halogen bond as sensitizer'1976 3,954,478'Silver halide emulsion containing an alkenyl benzothiazolium salt as stabilizer'1976 3,953,531'Alkylhydroquinone and process for producing the same'1976 3,945,832'Fogged, direct-positive silver halide emulsion containing desensitizers and a dimethine optical sensitizing dye'1976 3,933,505'Fogged, direct positive silver halide emulsion containing a nitro-substituted fluorene desensitizer'1976 3,930,863'Color photographic sensitive material'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1991Patents assigned to FUJI PHOTO FILM CO LTD (18)· patent assignee history

1976–1978Based in Minami-ashigara, JP· patent location history

1976–1991Based in Kanagawa, JP· patent location history

1977Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FUJI PHOTO FILM CO LTD	18	1976–1991

Locations

Location	Patents	Span
Minami-ashigara, JP	15	1976–1978
Kanagawa, JP	2	1976–1991
Tokyo, JP	1	1977