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USPTO Patent Rankings Data through Dec 31, 2025
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Frederick J. Cimperman — 9 Patents

ASAshlock: 3 patents #1 of 4Top 25%
AVAshlock Company, A Division Of Vistan: 3 patents #2 of 11Top 20%
VIVistant: 3 patents #1 of 4Top 25%
Castro Valley, CA: #126 of 760 inventorsTop 20%
California: #67,547 of 386,348 inventorsTop 20%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Frederick J. Cimperman has been granted 9 US patents while listed as an inventor at Ashlock. The first was granted in 1980 and the most recent in February 1999. Frederick J. Cimperman ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Frederick J. Cimperman in Castro Valley, CA, US.

Patents per Year

Patents granted per year, 1980 to 1999Bar chart with a peak of 2 patents in 1991.peak 21980: 1 patents19801981: 1 patents19811983: 1 patents19831991: 2 patents19911992: 1 patents19921993: 1 patents19931996: 1 patents19961999: 1 patents1999

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
5870949 Pitting apparatus with box cam; wiping blade, or separating assembly Klaus Silbermann 1999-02-16
5577439 Apparatus for pitting prunes or dates Klaus Silbermann 1996-11-26
5224409 Apparatus for producing helical slices Klaus Silbermann 1993-07-06
5167178 Method and apparatus for producing helical slices Klaus Silbermann 1992-12-01
5074203 Coring apparatus Thomas W. Hirtle, Klaus Silbermann 1991-12-24
5009909 Coring method Thomas W. Hirtle, Klaus Silbermann 1991-04-23
4388858 Machine for pitting and stuffing olives John L. Margaroli 1983-06-21
4248903 Method for obtaining folded stuffing pieces of pimento John L. Margaroli 1981-02-03
4220080 Machine for pitting and stuffing olives John L. Margaroli 1980-09-02