Inventor
Keitaro Yamagishi
Inventor
Tokyo, JP
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
LOC13primary
LOC1336%
G02BOptical elements, systems or apparatus9%
G11BInformation storage based on relative movement between record carrier and transducer9%
H01LSemiconductor devices9%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light9%
H05KPrinted circuits9%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation9%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h109%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978Patents assigned to NIPPON TELEGRAPH & TELEPHONE (1)· patent assignee history
1978Based in Kokubunji, JP· patent location history
2021Patents assigned to MITSUBISHI ELECTRIC CORP (5)· patent assignee history
2021Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MITSUBISHI ELECTRIC CORP | 5 | 2021 |
| NIPPON TELEGRAPH & TELEPHONE | 1 | 1978 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 5 | 2021 |
| Kokubunji, JP | 1 | 1978 |