Inventor
Kazumi Kinoshita
Inventor
Kawasaki, JP
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Mprimary
H04MTelephonic communication75%
H02HEmergency protective circuit arrangements13%
H03FAmplifiers13%
PatentTitleYear
5,335,271'Ring trip detection circuit'19945,113,426'Ground fault detector'19924,995,111'Ring trip circuit for subscriber telephone'19914,935,960'Battery feed circuit'19904,912,429'Operational amplifier'19904,862,309'Protection circuit for battery feed circuit'19894,827,503'Integrated ringing circuit and a ring trip circuit for the same'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1994Patents assigned to FUJITSU LTD (7)· patent assignee history
1989–1994Based in Kawasaki, JP· patent location history
1989Based in Yokohama, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJITSU LTD | 7 | 1989–1994 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kawasaki, JP | 6 | 1989–1994 |
| Yokohama, JP | 1 | 1989 |