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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
JC

John Calvert — 9 Patents

KWKimberly-Clark Worldwide: 2 patents #1,943 of 1,047Top 190%
LCLigitek Electronics Co.: 1 patents #9 of 38Top 25%
PHPrisma Health—Upstate: 1 patents #3 of 10Top 30%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
John Calvert has been granted 9 US patents. The first was granted in 1984 and the most recent in April 2021. John Calvert ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list John Calvert in St Albans, CA, GB.

Patents per Year

Patents granted per year, 1984 to 2021Bar chart with a peak of 1 patents in 1984.peak 11984: 1 patents19841988: 1 patents19881992: 1 patents19921993: 1 patents19931994: 1 patents19942001: 1 patents20012012: 1 patents20122013: 1 patents20132021: 1 patents2021

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10980696 Limb stretching device Robert G. Dickie, Elizabeth Dubose, Katherine Henson, Nicholas Rierson, Victor DePiero 2021-04-20
8590909 Wheelie bar for leaf spring equipped cars 2013-11-26
D656452 Differential mounting bracket 2012-03-27
D439715 Applicator for surface treatment compounds 2001-03-27
5354092 Traction device for motor vehicles 1994-10-11
5186346 Container 1993-02-16
5142733 Mat holders Philip J. Mogel 1992-09-01 $43,841,000
4765039 Mat holder Martyn Omar Rowlands 1988-08-23 $15,252,000
4430615 Reflection type probes for eddy current testing instruments 1984-02-07