Inventor
Tatsuo Heki
Inventor
Kanagawa, JP
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 purposes56%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests28%
C07DHeterocyclic compounds5%
B05DProcesses for applying fluent materials to surfaces, in general3%
B82YSpecific uses or applications of nanostructures3%
G11BInformation storage based on relative movement between record carrier and transducer3%
H01FMagnets3%
PatentTitleYear
6,936,403'Recording medium'20055,364,750'Direct positive silver halide photosensitive material'19945,009,993'Direct positive photographic material'19914,970,140'Direct positive photographic light-sensitive material'19904,956,267'Method for forming a direct positive color image'19904,954,427'Process for the formation of direct positive images'19904,948,712'Direct positive photographic materials and a method of forming direct positive images'19904,933,265'Process for forming direct positive color image'19904,914,009'Process for forming direct positive color image comprising the use of bleach accelerators'19904,880,729'Method for forming direct positive image comprising developing with a combination of a nucleating agent and a hydrazine derivative'19894,880,727'Direct positive photographic material'19894,877,723'Silver halide photographic material comprising a specified nucleating agent'19894,871,653'Process for forming direct-positive image'19894,863,845'Internal latent image type direct positive silver halide emulsions and process for producing the same'19894,863,839'Direct positive color image forming process'19894,859,579'Silver halide photographic material'19894,857,445'Direct positive photo-sensitive materials'19894,835,091'Process for forming a direct positive image'19894,816,290'Process of forming solid granular film'19894,801,520'Direct positive color light-sensitive material comprising a DIR coupler and a pyrazoloazole coupler, and a process for forming a direct positive image'19894,789,627'Method for forming direct positive color images'19884,469,784'Silver halide emulsions'19844,397,943'Silver halide photographic light-sensitive material'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–2005Patents assigned to FUJI PHOTO FILM CO LTD (23)· patent assignee history
1983–1994Based in Minami-ashigara, JP· patent location history
1984–1991Based in Kanagawa, JP· patent location history
2005Based 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 | 23 | 1983–2005 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kanagawa, JP | 12 | 1984–1991 |
| Minami-ashigara, JP | 10 | 1983–1994 |
| Tokyo, JP | 1 | 2005 |