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USPTO Patent Rankings Data through Dec 31, 2025
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Frederick L. Parsons — 7 Patents

UNUnknown: 4 patents #4,220 of 83,584Top 6%
Ridgewood, NJ: #78 of 388 inventorsTop 25%
New Jersey: #12,481 of 69,400 inventorsTop 20%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
Frederick L. Parsons has been granted 7 US patents while listed as an inventor at Unknown. The first was granted in 1980 and the most recent in August 1995. Frederick L. Parsons ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Frederick L. Parsons in Ridgewood, NJ, US.

Patents per Year

Patents granted per year, 1980 to 1995Bar chart with a peak of 2 patents in 1980.peak 21980: 2 patents19801981: 1 patents19811987: 2 patents19871989: 1 patents19891995: 1 patents1995

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
5443430 Spur gear differential for a vehicle 1995-08-22
4820248 Belt for use in a transmission system 1989-04-11
4665769 Differential drive 1987-05-19
4650442 Continuously variable transmission 1987-03-17
4257267 Dispenser unit with lockable actuating lever 1981-03-24
4227628 Fluid dispensing pump having axially deformable valve 1980-10-14
D254505 Hose coupling William G. Atkinson 1980-03-18