Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5753181 | Method for enhancement of polyguanide based sanitizing system | — | 1998-05-19 |
| 5527506 | Method for enhancement of polyguanide based sanitizing system | — | 1996-06-18 |
| 5254526 | Method to prevent algae growth in pools and spas | — | 1993-10-19 |
| 5045211 | No drain acid treatment of pools | — | 1991-09-03 |
| 4906384 | No drain acid treatment of pools | — | 1990-03-06 |
| 4846979 | Algacide and method for treatment of water | — | 1989-07-11 |
| 4645577 | Production of cyanuric acid | Lester A. Friedman, Jr. | 1987-02-24 |