Inventor
Sakae Yoshizawa
Inventor
Tokyo, 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 apparatus50%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light50%
PatentTitleYear
5,508,842'Optical amplifier'19965,136,420'Optical fiber amplifier'19925,087,110'Optical fiber cable and manufacture of optical fiber cable'19925,077,815'Apparatus for optically connecting a single-mode optical fiber to a multi-mode optical fiber'19915,007,698'Optical fiber amplifier/multiplexer'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–1996Patents assigned to FUJITSU LTD (5)· patent assignee history
1991Patents assigned to NIPPON TELEGRAPH & TELEPHONE (1)· patent assignee history
1991–1996Based in Tokyo, JP· patent location history
1992Based in Setagaya, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJITSU LTD | 5 | 1991–1996 |
| NIPPON TELEGRAPH & TELEPHONE | 1 | 1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 4 | 1991–1996 |
| Setagaya, JP | 1 | 1992 |