Inventor
Hitoshi Hirobe
Inventor
Tokyo, JP
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television56%
G02BOptical elements, systems or apparatus33%
G11BInformation storage based on relative movement between record carrier and transducer11%
PatentTitleYear
4,821,127'Demagnetizing apparatus for erasing signals recorded on concentric tracks'19894,792,866'Still picture recording apparatus'19884,783,703'Television flicker preventing circuit with gamma value conversion prior to field-to-frame conversion'19884,719,511'Exposure controlling method for television camera'19884,558,367'Automatic focusing device for video camera'19854,535,364'Spot exposure adjustment circuit'19854,465,352'Automatic focusing device'19844,445,757'Zooming device'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–1988Patents assigned to ASAHI OPTICAL CO LTD (5)· patent assignee history
1984–1989Based in Tokyo, JP· patent location history
1988–1989Patents assigned to FUJI PHOTO FILM CO LTD (3)· patent assignee history
1988Based in Kanagawa, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ASAHI OPTICAL CO LTD | 5 | 1984–1988 |
| FUJI PHOTO FILM CO LTD | 3 | 1988–1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 7 | 1984–1989 |
| Kanagawa, JP | 1 | 1988 |