Inventor
Yasuharu Suematsu
Inventor
Kawasaki, JP
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Sprimary
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light56%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests22%
G02BOptical elements, systems or apparatus11%
G11CStatic stores11%
PatentTitleYear
11,004,521Semiconductor device and semiconductor memory device20215,045,499'Method of manufacturing a distributed brass reflector type semiconductor laser'19914,914,670'Distributed bragg reflector type semiconductor laser'19904,410,994'Semiconductor laser'19834,340,966'Semiconductor laser with buffer layer'19824,054,363'Multi-hetero-structure waveguide type optical integrated circuitry'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1991Patents assigned to TOKYO INST TECH (2)· patent assignee history
1977–1991Based in Kawasaki, JP· patent location history
1982–1983Patents assigned to KOKUSAI DENSHIN DENWA CO LTD (2)· patent assignee history
1990Patents assigned to NISHIZAWA HIDEAKI (1)· patent assignee history
1991Patents assigned to JAPAN RES DEV CORP (1)· patent assignee history
2021Patents assigned to KIOXIA CORP (1)· patent assignee history
2021Based in Yokohama-shi, Kanagawa, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOKUSAI DENSHIN DENWA CO LTD | 2 | 1982–1983 |
| TOKYO INST TECH | 2 | 1977–1991 |
| JAPAN RES DEV CORP | 1 | 1991 |
| KIOXIA CORP | 1 | 2021 |
| NISHIZAWA HIDEAKI | 1 | 1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kawasaki, JP | 5 | 1977–1991 |
| Yokohama-shi, Kanagawa, JP | 1 | 2021 |