Issued Patents All Time
Showing 101–116 of 116 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4489203 | Polyumeric alkylene phosphoric acid piperazine derivatives as scale inhibitors | Druce K. Crump | 1984-12-18 |
| 4472200 | New additives for retarding setting of cement from methylenephosphonated aminohydrocarbylpiperazine-urea adducts | Druce K. Crump | 1984-09-18 |
| 4469663 | Scale control in flue gas desulfurization | Druce K. Crump, Gary D. Gatton | 1984-09-04 |
| 4468252 | Set retarding additives for cement from aminomethylenephosphonic acid derivatives | Druce K. Crump | 1984-08-28 |
| 4466836 | Set retarding compounds for use in cement slurries | Druce K. Crump | 1984-08-21 |
| 4466835 | Cement compositions containing set retarders | Druce K. Crump | 1984-08-21 |
| 4459241 | Compounds containing quaternary ammonium and methylenephosphonic acid groups | Wilfred W. Wilson | 1984-07-10 |
| 4438040 | Process for making aminopolycarboxylic acid chelates of iron | Katherine H. Svatek, Freddie Griffin, Jr. | 1984-03-20 |
| 4430128 | Aqueous acid composition and method of use | Wayne W. Frenier | 1984-02-07 |
| 4399070 | Stable salt-free partially chelated metal compositions and method of preparation | — | 1983-08-16 |
| 4364871 | Process for making aminopolycarboxylic acid chelates of iron | Katherine H. Svatek, Freddie Griffin, Jr. | 1982-12-21 |
| 4348506 | Process for curing vinyl ester resins and composition useful therein | Kalyan K. Ganguli | 1982-09-07 |
| 4322361 | Method of preparing a manganese chelate having improved properties | Freddie Griffin, Jr. | 1982-03-30 |
| 4312815 | Preparation of a zinc chelate having improved stability | Druce K. Crump, Freddie Griffin, Jr. | 1982-01-26 |
| 4212994 | Process for the preparation of carboxylic acid | Roy Schmidt | 1980-07-15 |
| 4205065 | Non-yellowing compositions containing hexamethylenetetramine 1,3-dichloropropene salts | Avis Lloyd McCrary | 1980-05-27 |