Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Sigmar Willnauer — 6 Patents

Apple: 5 patents #5,490 of 18,612Top 30%
VGVoith Sulzer Papiertechnik Patent Gmbh: 1 patents #124 of 224Top 60%
Campbell, CA: #695 of 2,187 inventorsTop 35%
California: #94,478 of 386,348 inventorsTop 25%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Sigmar Willnauer has been granted 6 US patents while listed as an inventor at Apple. The first was granted in 1987 and the most recent in December 2000. Sigmar Willnauer ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Sigmar Willnauer in Campbell, CA, US.

Patents per Year

Patents granted per year, 1987 to 2000Bar chart with a peak of 1 patents in 1987.peak 11987: 1 patents19871989: 1 patents19891990: 1 patents19901991: 1 patents19911993: 1 patents19932000: 1 patents2000

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
D435260 Facade for a paper-making machine Martin Buschle, Jorn Dallmann, Edward L. Kaiser 2000-12-19
D339537 Portable diagnostic test apparatus Anthony Y. Guido, Stephen R. Martin 1993-09-21
D316709 Monitor stand Robert A. Howard 1991-05-07
D308196 Video display for a computer 1990-05-29
D304448 Integrated circuit memory module Michael De La Cruz 1989-11-07
D290716 Laser printer Stephen Peart, Terrence B. Christensen 1987-07-07