Inventor
Hirotaka Yanagisawa
Inventor
Azumino, JP
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus33%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them33%
H04NPictorial communication, e.g. television22%
B29DProducing particular articles from plastics or from substances in a plastic state11%
PatentTitleYear
11,073,749Projection system, projection-type image display apparatus, and imaging apparatus202111,073,754Projection optical system, projection-type image display device, imaging device, and method of manufacturing optical element202111,073,753Projection optical system, projection-type image display device, and imaging device202110,447,891Image data processing server for storing device image data and for authenticating user authorized services20199,602,695'Image type based data transmission'2017Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2017–2019Patents assigned to PFU LTD (2)· patent assignee history
2017–2019Based in Kahoku, JP· patent location history
2021Patents assigned to SEIKO EPSON CORP (3)· patent assignee history
2021Based in Azumino, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SEIKO EPSON CORP | 3 | 2021 |
| PFU LTD | 2 | 2017–2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Azumino, JP | 3 | 2021 |
| Kahoku, JP | 2 | 2017–2019 |