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

John R. Chan — 8 Patents

UNUnknown: 1 patents #29,356 of 83,584Top 40%
Samsung: 1 patents #50,112 of 75,807Top 70%
Fremont, CA: #2,135 of 9,298 inventorsTop 25%
California: #74,834 of 386,348 inventorsTop 20%
Overall (All Time): #600,572 of 4,157,543Top 15%
8 Patents All Time
John R. Chan has been granted 8 US patents while listed as an inventor at Unknown. The first was granted in 1987 and the most recent in June 2025. John R. Chan ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list John R. Chan in Fremont, CA, US.

Patents per Year

Patents granted per year, 1987 to 2025Bar chart with a peak of 2 patents in 1987.peak 21987: 2 patents19871993: 1 patents19931997: 1 patents19972000: 1 patents20002017: 1 patents20172018: 1 patents20182025: 1 patents2025

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
D1078009 Personal air purifier 2025-06-03
10008752 Safety feature for energy storage device 2018-06-26
9620830 Vehicle battery module with cooling and safety features Vinod K. Rao 2017-04-11
6116977 Collection box Chaim T. Tanny, Lee Allan Shapiro 2000-09-12
5644451 Mechanism for loading and unloading of read/write heads at an inner diameter of a disk Jeffrey R. Burt 1997-07-01
5214550 Miniature removable rigid disk drive and cartridge system 1993-05-25
4703375 Low mass tricomplaint recording device for double sided floppy disk media Homer Stewart Pitner 1987-10-27
4667257 Disk drive and centering mechanism for microfloppy disk drive 1987-05-19