Issued Patents All Time
Showing 25 most recent of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4720492 | Quaternary ammonium derivatives of 1,4-thiazine sulfonic acids | — | 1988-01-19 |
| 4670186 | Acid inhibitor composition | — | 1987-06-02 |
| 4578243 | Inhibiting corrosion with quaternary ammonium derivatives of 1,4-thiazine sulfonic acids | — | 1986-03-25 |
| 4569992 | Quaternary ammonium derivatives of 1,4 thiazine sulfonic acids | — | 1986-02-11 |
| 4559163 | Halide free octahydrophenanthridine corrosion inhibitors | — | 1985-12-17 |
| 4539140 | Mixtures of non-halogen salts of nitrogen heterocyclics and nitrogen-sulfur heterocyclics | — | 1985-09-03 |
| 4525296 | Halide free corrosion inhibitors | — | 1985-06-25 |
| 4522643 | Use of quaternized derivatives of polymerized pyridines and quinolines as microbiocides | — | 1985-06-11 |
| 4514320 | Halide free corrosion inhibitors | — | 1985-04-30 |
| 4494977 | Quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids | — | 1985-01-22 |
| 4418195 | Silicon-containing quaternary ammonium thiazines | — | 1983-11-29 |
| 4372775 | Inhibition of microbiological growth with thiazine quaternary ammonium salts of polyepihalohydrin | — | 1983-02-08 |
| 4371497 | Inhibition of corrosion with thiazine quaternary ammonium salts of polyepihalophydrin | — | 1983-02-01 |
| 4361555 | .alpha.-1,4-Thiazine alkanephosphonic acids | — | 1982-11-30 |
| 4358382 | Use of quaternized derivatives of polymerized pyridines and quinolines as water clarifiers | — | 1982-11-09 |
| 4354945 | Clarification process with thiazine quaternary ammonium salts of polyepihalohydrin | — | 1982-10-19 |
| 4346217 | Di-quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids | — | 1982-08-24 |
| 4343720 | Quaternary alkynoxymethyl amines | — | 1982-08-10 |
| 4342584 | Microbiocidal process using di-quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids | — | 1982-08-03 |
| 4341657 | Use of quaternized derivatives of polymerized pyridines and quinolines as corrosion inhibitors | — | 1982-07-27 |
| 4339347 | Use of quaternized derivatives of polymerized pyridines and quinolines as demulsifiers | — | 1982-07-13 |
| 4336156 | Quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids | — | 1982-06-22 |
| 4332799 | Quaternaries of tertiary amino-substituted thiazines | — | 1982-06-01 |
| 4331554 | Demulsification process with thiazine quaternary ammonium salts of polyepihalohydrin | — | 1982-05-25 |
| 4323461 | Process of inhibiting scale formation in aqueous systems using di-quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids | — | 1982-04-06 |