Inventor
Kenichi Horikawa
Inventor
Tokyo, JP
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer88%
H01GCapacitors13%
PatentTitleYear
6,909,590'High voltage capacitor and magnetron'2005RE034927'Magnetic tape cassette with tape protective closure and lock mechanism'19954,881,137'Magnetic tape cassette with tape protective closure and lock mechanism'19894,843,510'Magnetic tape cassette with tape protective closure and lock mechanism'19894,816,953'Tape cassette with groove engageable with loading hook'19894,694,360'Tape cassette with concave engagement portion and player with hook engageable therewith'19874,644,433'Magnetic tape cassette having integrated optical elements'19874,572,461'Magnetic tape cassette'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986–1995Patents assigned to SONY CORP (7)· patent assignee history
1986–2005Based in Tokyo, JP· patent location history
2005Patents assigned to TDK CORP (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SONY CORP | 7 | 1986–1995 |
| TDK CORP | 1 | 2005 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 8 | 1986–2005 |