Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5149878 | 1,4-disubstituted-2,3,5,6-tetrahyddroxy-1,4-diphosphorinanes and their oxides or sulfides | Allan J. Robertson | 1992-09-22 |
| 5077437 | 1,4-Disubstituted-2,3,5,6-tetrahydroxy-1,4-diphosphorinane and their oxides or sulfides | Allan J. Robertson | 1991-12-31 |
| 4968416 | 1,4-disubstituted-2,3,5,6-tetrahydroxy-1,4-diphosphorinanes and their oxides or sulfides and their use in froth flotation | Allan J. Robertson | 1990-11-06 |
| 4929393 | 1,4-Disubstituted-2,3,5,6-tetrahydroxy-1,4-diphosphorinanes and their oxides or sulfides | Allan J. Robertson | 1990-05-29 |
| 4855507 | 1,4-Disubstituted-2,3,5,6-tetrahydroxy-1,4-diphosphorinanes and their oxides or sulfides | Allan J. Robertson | 1989-08-08 |