Inventor
Juergen Dreyer
Inventor
Willstaett, DE
Overview
Patents· 6 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 transducer75%
F16FSprings13%
Y10TTechnical subjects covered by former us classification13%
PatentTitleYear
5,636,094'Cassette with recording medium, in particular magnetic tape cassette'19975,481,426'Cassette with recording medium, in particular magnetic tape cassette'19965,042,740'Pressure spring for tape cassettes and tape cassettes having said spring'19915,002,239'Locking/unlocking means for a cassette, and a cassette having this means'19914,736,904'Tape guide means for a tape to be transported, in particular in a magnetic tape cassette or in a tape transport apparatus'19884,613,095'Plate spring for a tape cassette'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986–1991Patents assigned to BASF AG (4)· patent assignee history
1986–1988Based in Ruelzheim, DE· patent location history
1991–1997Based in Willstaett, DE· patent location history
1996–1997Patents assigned to BASF MAGNETICS GMBH (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BASF AG | 4 | 1986–1991 |
| BASF MAGNETICS GMBH | 2 | 1996–1997 |
Locations
| Location | Patents | Span |
|---|---|---|
| Willstaett, DE | 4 | 1991–1997 |
| Ruelzheim, DE | 2 | 1986–1988 |