John Dvorak — 5 Patents at Tokenize

John Dvorak has been granted 5 US patents while listed as an inventor at Tokenize. The first was granted in 1990 and the most recent in July 2025. John Dvorak ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list John Dvorak in West Liberty, IA, US.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date
12354339	Biometric recognition and security system	Evan Krueger, Melanie Shapiro	2025-07-08
11138409	Biometric recognition and security system	Evan Krueger, Melanie Shapiro	2021-10-05
10992664	Biometric data hashing, verification and security	Stephen L. Schultz, David R. Nilosek	2021-04-27
9935948	Biometric data hashing, verification and security	Stephen L. Schultz, David R. Nilosek	2018-04-03
4906180	Tile retainer means	—	1990-03-06

John Dvorak — 5 Patents

Issued Patents All Time

Patent Widget