Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Norbert Schaeffer — 6 Patents

Basf Se: 5 patents #3,244 of 13,826Top 25%
BGBasf Magnetics Gmbh: 1 patents #68 of 147Top 50%
Deidesheim, DE: #7 of 37 inventorsTop 20%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Norbert Schaeffer has been granted 6 US patents while listed as an inventor at Basf Se. The first was granted in 1986 and the most recent in December 1995. Norbert Schaeffer ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Norbert Schaeffer in Deidesheim, DE.

Patents per Year

Patents granted per year, 1986 to 1995Bar chart with a peak of 2 patents in 1995.peak 21986: 1 patents19861987: 1 patents19871989: 1 patents19891990: 1 patents19901995: 2 patents1995

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
5477406 Pressure device for recording media in a tape cassette Klaus Schoettle, Reinhard Stransky, Klaus-Dieter Goetz 1995-12-19
5402296 Tape cassette, in particular magnetic tape cassette, and support liners for this Klaus Manzke, Lothar Gliniorz, Klaus Schoettle, Arno Huck 1995-03-28
4964588 Right parallelepiped cassette for tape-like recording media, and housing part thereof Bernd Hoffrichter, Bozidar Pavelka, Dietmar Pfefferkorn, Klaus-Dieter Goetz 1990-10-23
4809928 Right parallelepiped cassette for tape-like recording media, and housing part thereof Bernd Hoffrichter, Bozidar Pavelka, Dietmar Pfefferkorn, Klaus-Dieter Goetz 1989-03-07
4709288 Adjusting means in particular for guide elements, and magnetic tape cassette possessing such means Gunter Bettinger, Klaus-Dieter Goetz, Dietmar Pfefferkorn, Ottmar Burkle, Kurt Schmidts +5 more 1987-11-24
4632334 Tape cassette, in particular a magnetic tape cassette, and a reel support liner therefor Dietmar Pfefferkorn, Roland Sold, Uwe Brinkmann, Ludwig Kreitner, Roland Sigwalt 1986-12-30