Issued Patents All Time
Showing 26–50 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6518520 | Apparatus and method for weighing the occupant of a bed | John F. Jones | 2003-02-11 |
| 6471849 | Process for the recovery of zinc from a zinc sulphide ore or concentrate | — | 2002-10-29 |
| 6455019 | Process for the extraction of copper from a sulphide copper ore or concentrate | — | 2002-09-24 |
| 6383460 | Process for the recovery of nickel and/or cobalt from a concentrate | — | 2002-05-07 |
| RE37251 | Chloride assisted hydrometallurgical extraction of metal | — | 2001-07-03 |
| 6171564 | Process for extraction of metal from an ore or concentrate containing nickel and/or cobalt | — | 2001-01-09 |
| 6054105 | Process for the solvent extraction of nickel and cobalt values in the presence of magnesium ions from a solution | — | 2000-04-25 |
| 5923244 | Method of detecting a deflated tire on a vehicle | — | 1999-07-13 |
| 5902474 | Chloride assisted hydrometallurgical extraction of metal | — | 1999-05-11 |
| 5874055 | Chloride assisted hydrometallurgical extraction of metal | — | 1999-02-23 |
| 5869012 | Chloride assisted hydrometallurgical extraction of metal | — | 1999-02-09 |
| 5862499 | Method of detecting a deflated tire on a vehicle | — | 1999-01-19 |
| 5855858 | Process for the recovery of nickel and/or cobalt from an ore or concentrate | — | 1999-01-05 |
| 5838230 | Method of detecting a deflated tire on a vehicle | — | 1998-11-17 |
| 5783991 | Method of detecting a deflated tire on a vehicle | — | 1998-07-21 |
| 5746465 | Method and apparatus for moving a physically disabled person to and from a driving position within a vehicle | George L. Drenner, Jr. | 1998-05-05 |
| 5650057 | Chloride assisted hydrometallurgical extraction of metal | — | 1997-07-22 |
| 5645708 | Chloride assisted hydrometallurgical copper extraction | — | 1997-07-08 |
| 5592703 | Powered toilet seat lift | George L. Drenner, Jr. | 1997-01-14 |
| 5589816 | Method and device for detecting a deflated tire on a vehicle | — | 1996-12-31 |
| 5552760 | Method of detecting a deflated tire on a vehicle | — | 1996-09-03 |
| 5541573 | Method of detecting a deflated tire on a vehicle | — | 1996-07-30 |
| 5520823 | Filters for light metals | Martin S. Swift, Reinhard Stoetzel | 1996-05-28 |
| 5482424 | Car rack for wheelchairs and the like | George L. Drenner, Jr. | 1996-01-09 |
| 5431788 | Chloride assisted hydrometallurgical copper extraction | — | 1995-07-11 |