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JT

John Tsai — 47 Patents

EPExcel Precision: 19 patents #1 of 9Top 15%

FIFibera: 15 patents #1 of 6Top 20%

PayPal: 6 patents #221 of 1,973Top 15%

HCHo Lee Co.: 1 patents #4 of 6Top 70%

San Francisco, CA: #531 of 26,999 inventorsTop 2%

California: #8,880 of 386,348 inventorsTop 3%

Overall (All Time): #59,703 of 4,157,543Top 2%

47 Patents All Time

John Tsai has been granted 47 US patents while listed as an inventor at Excel Precision. The first was granted in 1990 and the most recent in September 2024. John Tsai ranks #59,703 of 4,157,543 US inventors in our database (top 1.4%). Patent records list John Tsai in San Francisco, CA, US.

Patents per Year

Issued Patents All Time

Showing 1–25 of 47 patents

Patent #	Title	Co-Inventors	Date
12093425	Personal information platforms	Norihiro Edwin Aoki	2024-09-17
11687669	Personal information platforms	Norihiro Edwin Aoki	2023-06-27
11321485	Personal information platforms	Norihiro Edwin Aoki	2022-05-03
10761212	User interface configurations for data transfers	Sumeet Ahuja	2020-09-01
10678943	Personal information platforms	Norihiro Edwin Aoki	2020-06-09
10198464	Personal information platforms	Norihiro Edwin Aoki	2019-02-05
7375822	Rotation and translation measurement	—	2008-05-20
7290709	Information card system	Erica Tsai	2007-11-06
7268699	Highway-rail grade crossing hazard mitigation	—	2007-09-11
7245217	Hazard mitigation for railway track intrusions at train station platforms	—	2007-07-17
7224467	System for rotation measurement with laser interferometry	—	2007-05-29
7196798	Optical alignment method and apparatus	—	2007-03-27
7139295	Tunable wavelength locker, tunable wavelength spectrum monitor, and relative wavelength measurement system	David W. Wang	2006-11-21
7116846	Athermal fiber Bragg grating	Joseph A. Methe, Pey Schuan Jian, Peiti Su, David W. Wang	2006-10-03
7110121	Rotation and translation measurement	—	2006-09-19
7025265	Information card system	Erica Tsai	2006-04-11
7027136	Structure analysis and defect detection system	David W. Wang	2006-04-11
7004038	Fiber optic flow meter	—	2006-02-28
6904200	Multidimensional optical gratings	David W. Wang	2005-06-07
6858834	Light wavelength meter	—	2005-02-22
6812452	Apparatus and method for measuring the wavelength of light present in a light beam	—	2004-11-02
6807339	Wavelength division multiplexing and de-multiplexing system	David W. Wang	2004-10-19
6804060	Interference filter fabrication	David W. Wang	2004-10-12
6795459	Light frequency locker	—	2004-09-21
6789738	Information card system	Erica Tsai	2004-09-14