Inventor
Shigeru Mizusawa
Inventor
Tokyo, JP
Overview
Patents· 4 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 transducer50%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium17%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients17%
G02BOptical elements, systems or apparatus17%
PatentTitleYear
6,562,992'Optical material'2003RE034927'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'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1995Patents assigned to SONY CORP (3)· patent assignee history
1989–1995Based in Tokyo, JP· patent location history
2003Patents assigned to KUREHA CHEMICAL IND CO LTD (1)· patent assignee history
2003Based in Iwaki, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SONY CORP | 3 | 1989–1995 |
| KUREHA CHEMICAL IND CO LTD | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 3 | 1989–1995 |
| Iwaki, JP | 1 | 2003 |