Issued Patents All Time
Showing 76–94 of 94 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5019134 | Reactive dyes | Denis Robert Annesley Ridyard | 1991-05-28 |
| 4990032 | Retaining wall module with asymmetrical anchor | — | 1991-02-05 |
| 4982544 | Module and method for constructing sealing load-bearing retaining wall | — | 1991-01-08 |
| 4932554 | Lid retaining collar | Andrew P. Pavely | 1990-06-12 |
| 4923339 | Foldable concrete retaining wall structure | — | 1990-05-08 |
| 4884921 | Retaining wall module having face panel and T-stem with means for receiving transverse stabilizing web | — | 1989-12-05 |
| 4873046 | Production of stretched ion-exchange membrane | Janusz J. H. Krause, Robin A. Woolhouse | 1989-10-10 |
| RE32936 | Adjustable mold for concrete median barrier | — | 1989-05-30 |
| 4773693 | Seat release mechanism | Gulam Premji | 1988-09-27 |
| 4758830 | Switch/display units | David A. Levien, Michael A. Pym, William Graham | 1988-07-19 |
| 4723374 | Cantilevered sliding gate | Douglas C. Peterson, Kenneth C. Fischer, Richard E. Dawson, III | 1988-02-09 |
| 4668462 | Adjustable mold for concrete median barrier | — | 1987-05-26 |
| 4617163 | Production of ion-exchange membrane | — | 1986-10-14 |
| 4523984 | Treatment of ion-exchange membrane | Keith G. Moss, Robin A. Woolhouse | 1985-06-18 |
| 4482597 | Insulating material | — | 1984-11-13 |
| 4432249 | Liquid sampling | George Levey | 1984-02-21 |
| 4254945 | Fixture for hanging large panels | Leland E. Paulson | 1981-03-10 |
| 4231499 | Hanger with collapsible arms provided with a release and locking mechanism | — | 1980-11-04 |
| 4229169 | Dental prostheses fitting | Kishor Bava | 1980-10-21 |