Norbert Schaeffer
7Patents
4h-index
24Co-inventors
53Inventor score
Filing activity: Apr 17, 1975 → Feb 4, 1994
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5477406A | Pressure device for recording media in a tape cassette | Physics | 10 | Expired |
| US4709288A | Adjusting means in particular for guide elements, and magnetic tape cassette possessing such means | Physics | 7 | Expired |
| US4809928A | Right parallelepiped cassette for tape-like recording media, and housing part thereof | Physics | 7 | Expired |
| US4632334A | Tape cassette, in particular a magnetic tape cassette, and a reel support liner therefor | Chemistry; Metallurgy | 4 | Expired |
| US4964588A | Right parallelepiped cassette for tape-like recording media, and housing part thereof | Physics | 2 | Expired |
| US5402296A | Tape cassette, in particular magnetic tape cassette, and support liners for this | Physics | 2 | Expired |
| USRE28863E | Guide elements for magnetic tapes wound or to be wound in the form of packs on flangeless spools | General | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.