Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4913823 | Process for dissolving and removing scale from aqueous systems | Kelvin Y. Chang | 1990-04-03 |
| 4798675 | Corrosion inhibiting compositions containing carboxylated phosphonic acids and sequestrants | Kelvin Y. Chang | 1989-01-17 |
| 4277359 | Water treatment to inhibit corrosion and scale and process | — | 1981-07-07 |
| 4246030 | Corrosion inhibiting compositions and the process for using same | — | 1981-01-20 |
| 4217216 | Corrosion inhibiting compositions | — | 1980-08-12 |