Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4288333 | Dissolving barium sulfate scale with aqueous solutions of salts of phosphomethyl and amino-substituted macrocyclic polyethers | Arie Van Zon, Feike De Jong | 1981-09-08 |
| 4215000 | Dissolving barium sulfate scale with aqueous solutions of bicyclic macrocyclic polyethers and organic acid salts | Feike De Jong, David N. Reinhoudt | 1980-07-29 |
| 4190462 | Dissolving barium sulfate scale with aqueous solutions of salts of carboxymethyl monocyclic macrocyclic polyamines | Reike De Jong, David N. Reinhoudt | 1980-02-26 |