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

Jeffrey Prince — 13 Patents

DTD4D Technologies: 5 patents #8 of 34Top 25%
LBLoredan Biomedical: 3 patents #4 of 15Top 30%
SPStairmaster Sports/Medical Products: 2 patents #8 of 15Top 55%
Grass Valley, CA: #25 of 334 inventorsTop 8%
California: #47,433 of 386,348 inventorsTop 15%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
Jeffrey Prince has been granted 13 US patents while listed as an inventor at D4D Technologies. The first was granted in 1994 and the most recent in June 2020. Jeffrey Prince ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Jeffrey Prince in Grass Valley, CA, US.

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
10668405 Multi-vessel filtration system for hazardous or radioactive waste water Mark S. Denton 2020-06-02
10106439 Surface or submersible sluiceable filtration system for hazardous or radioactive waste water Mark S. Denton 2018-10-23
7789601 Mill blank mandrel Rod Duncan, Branko Bem 2010-09-07
7226338 Milling machine Rod Duncan, Joel Witt, Mark Quadling, Henley Quadling, Branko Bem +4 more 2007-06-05
D529521 Non-cylindrical mandrel Rod Duncan, Branko Bem 2006-10-03
D529056 Mandrel Rod Duncan 2006-09-26
D527750 Cylindrical mandrel Rod Duncan, Branko Bem 2006-09-05
6890278 Chain with selectivity engaged links 2005-05-10
5437587 Linear tracking isokinetic exerciser and method Glen R. Mangseth, Malcolm L. Bond, John Bouwman, Philip T. Dempster 1995-08-01
5387170 Resistance training machine R. Lee Rawls 1995-02-07
5348519 Exercise and diagnostic apparatus and method Robert Lee Rawls, Philip T. Dempster, Jody Ono 1994-09-20
5330397 Linear tracking isokinetic exerciser Glen R. Mangseth, Malcolm L. Bond, John Bouwman, Philip T. Dempster 1994-07-19
5308303 Resistance training machine R. Lee Rawls 1994-05-03