Inventor
Tutomu Kawasaki
Inventor
Tsuchiura, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus30%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light30%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1030%
A63BApparatus for physical training, gymnastics, swimming, climbing, or fencing10%
PatentTitleYear
9,878,224'Rod-like object for ball games and method for using the same'20184,997,243'Method of mounting a light emitting chip and an optical fiber on a photoelectric device'19914,920,262'Photoelectric device with leads'19904,803,361'Photoelectric device with optical fiber and laser emitting chip'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1991Patents assigned to HITACHI LTD (3)· patent assignee history
1989–1991Patents assigned to HITACHI TOBU SEMICONDUCTOR LTD (2)· patent assignee history
1989–1991Based in Tsuchiura, JP· patent location history
1990Patents assigned to HITACHI TOBU SEMICONDUCTOR (1)· patent assignee history
2018Patents assigned to SUZUKI TAKAHITO (1)· patent assignee history
2018Based in Osaka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 3 | 1989–1991 |
| HITACHI TOBU SEMICONDUCTOR LTD | 2 | 1989–1991 |
| HITACHI TOBU SEMICONDUCTOR | 1 | 1990 |
| SUZUKI TAKAHITO | 1 | 2018 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tsuchiura, JP | 3 | 1989–1991 |
| Osaka, JP | 1 | 2018 |