Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
JF

Johan Fitter

UNUnknown: 6 patents #2,010 of 83,584Top 3%
Roodepoort, ZA: #1 of 72 inventorsTop 2%
Overall (All Time): #319,157 of 4,157,543Top 8%
15 Patents All Time

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDate
10593997 Metal accumulation inhibiting and performance enhancing supplement and a system for delivering the supplement 2020-03-17
7238849 Adhesive dispensing arrangement Barbara Sheila Goldberg, Patricia Ann Crossley, Brian Lester Wolfowitz 2007-07-03
7147972 Method and apparatus for achieving prolonged battery life Robert T. Morris, Richard E. Belmont, John T. C. Kan 2006-12-12
6899978 Electrochemical cell 2005-05-31
6821681 Electrochemical cells and an interchangeable electrolyte therefore 2004-11-23
6732755 Attachment mechanism for attaching ports to liquid containers 2004-05-11
6675842 Fluid delivery system 2004-01-13
6635387 Method and apparatus for achieving prolonged battery life Robert T. Morris, Richard E. Belmont, John T. C. Kan 2003-10-21
6554025 Multiple container filling system 2003-04-29
6446681 Filler unit for topping up a container with liquid 2002-09-10
6427732 Filler unit for automatically topping up a container with liquid 2002-08-06
6220141 Liquid projectile launcher Patricia Ann Crossley 2001-04-24
5712771 Power converter Jan Abraham Ferreira, Philippus Coenraad Theron 1998-01-27
4897626 Cooling electromagnetic devices 1990-01-30
4544004 Filler unit for topping up a container with liquid David J. Henderson 1985-10-01