Issued Patents All Time
Showing 51–68 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5132008 | Preparation of bis(alkylthio) alkanes or bis(arylthio) alkanes and use thereof | Marshall D. Bishop | 1992-07-21 |
| 4994150 | Process for the purification of esters of mercapto acids | — | 1991-02-19 |
| 4987289 | Liquid crystal display heating system | Gary D. Bishop, Melvin L. Campbell | 1991-01-22 |
| 4978796 | N-alkylpyrrolidone solvents for preparation of aromatic thiols | — | 1990-12-18 |
| 4974122 | Compact LCD luminaire | — | 1990-11-27 |
| 4964957 | Purification of high boiling alkyl sulfides | John S. Roberts | 1990-10-23 |
| 4810364 | Hydrotreating process and catalyst | — | 1989-03-07 |
| 4739063 | Selective hydrogenation of heterocyclic aromatic compounds | — | 1988-04-19 |
| 4739064 | Selective hydrogenation of heterocyclic aromatic compounds | — | 1988-04-19 |
| 4732690 | Oil recovery composition | — | 1988-03-22 |
| 4637467 | Permeability contrast correction | John Westerman | 1987-01-20 |
| 4612991 | Oil recovery process | — | 1986-09-23 |
| 4586568 | Polymerflood process | Ahmad Moradi-Araghi | 1986-05-06 |
| 4561501 | Surfactant oil recovery systems and recovery of oil therewith | Jerry E. Pardue | 1985-12-31 |
| 4556495 | Immiscible displacement of oil with surfactant system | — | 1985-12-03 |
| 4553593 | Oil recovery method | — | 1985-11-19 |
| 4508171 | Oil recovery method | — | 1985-04-02 |
| 4494604 | Extraction of acidic materials from organic liquids and use thereof in enhanced oil recovery | Paul R. Stapp | 1985-01-22 |