Inventor
Koji Ishiwata
Inventor
Kanagawa, JP
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer55%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds18%
C08LCompositions of macromolecular compounds18%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light9%
PatentTitleYear
9,695,260'Method for producing olefin block polymer using plurality of types of transition metal catalysts'20179,593,194'Method for producing olefin block polymer using group 4 transition metal complex'20178,094,693'Laser control method and laser control circuit'20125,444,681'Method and apparatus for recording signals with sub-signals indicative of outline of the signals'19955,375,106'Reproducing system with detachable storage medium for storing selected cue points'19945,291,467'Disc recording apparatus for recording a signal without losing the signal during an occurrence of a track jump'19945,206,850'Optically writable record of digital information and recording apparatus therefor'19934,931,927'Method of constructing and recording list of recorded data in postscript type optical disk'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1995Patents assigned to SONY CORP (5)· patent assignee history
1990–2012Based in Kanagawa, JP· patent location history
2012Patents assigned to ISHIWATA KOJI (1)· patent assignee history
2012Patents assigned to NAKAYAMA KUNIO (1)· patent assignee history
2012Patents assigned to PARK CHEONSEOK (1)· patent assignee history
2017Patents assigned to SUMITOMO CHEMICAL CO (2)· patent assignee history
2017Based in Chiba, JP· patent location history
2017Based in Ichihara, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SONY CORP | 5 | 1990–1995 |
| SUMITOMO CHEMICAL CO | 2 | 2017 |
| ISHIWATA KOJIself | 1 | 2012 |
| NAKAYAMA KUNIO | 1 | 2012 |
| PARK CHEONSEOK | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kanagawa, JP | 6 | 1990–2012 |
| Chiba, JP | 1 | 2017 |
| Ichihara, JP | 1 | 2017 |