Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9102695 | Phosphinic acids and their sulfur derivatives and methods for their preparation | Yuehui Zhou, Jeffrey Charles Henry Dyck, Boban Jakovljevic, Cyril Christian Henri Bourget, Donato Nucciarone | 2015-08-11 |
| 8764880 | Phosphinic acids and their sulfur derivatives and methods for their preparation | Yuehui Zhou, Jeffrey Charles Henry Dyck, Boban Jakovljevic, Cyril Christian Henri Bourget, Donato Nucciarone | 2014-07-01 |
| 7638636 | Phosphonium and imidazolium salts and methods of their preparation | Yuehui Zhou, John H. Hillhouse, Douglas Baumann | 2009-12-29 |
| 5250736 | Method of preparing a phosphine compound | Colleen E. Micklethwaite | 1993-10-05 |
| 5149878 | 1,4-disubstituted-2,3,5,6-tetrahyddroxy-1,4-diphosphorinanes and their oxides or sulfides | James B. Gallivan | 1992-09-22 |
| 5077437 | 1,4-Disubstituted-2,3,5,6-tetrahydroxy-1,4-diphosphorinane and their oxides or sulfides | James B. Gallivan | 1991-12-31 |
| 5028403 | Metal recovery with monothiophosphinic acids | William A. Rickelton | 1991-07-02 |
| 4968416 | 1,4-disubstituted-2,3,5,6-tetrahydroxy-1,4-diphosphorinanes and their oxides or sulfides and their use in froth flotation | James B. Gallivan | 1990-11-06 |
| 4929393 | 1,4-Disubstituted-2,3,5,6-tetrahydroxy-1,4-diphosphorinanes and their oxides or sulfides | James B. Gallivan | 1990-05-29 |
| 4909939 | Process for solvent extraction using phosphine oxide mixtures | William A. Rickelton | 1990-03-20 |
| 4855507 | 1,4-Disubstituted-2,3,5,6-tetrahydroxy-1,4-diphosphorinanes and their oxides or sulfides | James B. Gallivan | 1989-08-08 |
| 4555368 | Process for synthesizing diorganomonothiophosphinates | — | 1985-11-26 |
| 4537993 | Bis(.beta.-carboxyethyl)isobutyl, sec. butyl and t-butyl phosphine oxide and polyamides containing the same | Christos Savides | 1985-08-27 |
| 4382016 | Extractant for the selective removal of cobalt(II) from aqueous solutions | William A. Rickelton, David R. Burley | 1983-05-03 |
| 4374780 | Di-2,4,4'-trimethylpentylphosphinic acid and its preparation | — | 1983-02-22 |
| 4353883 | Selective extraction of cobalt(II) from aqueous solutions with phosphinic acid extractants | William A. Rickelton, David R. Burley | 1982-10-12 |
| 4348367 | Selective removal of cobalt(II) from aqueous solutions with phosphinic extractants | William A. Rickelton, David R. Burley | 1982-09-07 |
| 4321213 | 2,4,4'-Trimethylpentyl, cyclohexylphosphinic acid and its preparation | — | 1982-03-23 |
| 4308214 | Preparation of dialkyldithiophosphinates | Tony Ozog | 1981-12-29 |
| 4260592 | Manufacture of water-insoluble ammonium polyphosphate | Hans A. Corver | 1981-04-07 |