Issued Patents All Time
Showing 26–50 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4939302 | Process for preparing stable organic hydroxysulfide compositions | — | 1990-07-03 |
| 4891444 | Oxa-organic sulfur compounds, their preparation and use | Tod K. Shioyama | 1990-01-02 |
| 4837192 | Catalyst composition | — | 1989-06-06 |
| 4721813 | Method for the oxidation of mercaptoalkanols to dithiodiglycols | Harold W. Mark | 1988-01-26 |
| 4543105 | Modification of liquid hydrocarbons | Frederick A. Waite | 1985-09-24 |
| 4537994 | Sulfide metathesis | — | 1985-08-27 |
| 4535066 | Passivating metals on cracking catalysts | Harold W. Mark, Brent J. Bertus, Dwight L. McKay, Lyle E. Fenska | 1985-08-13 |
| 4459366 | Passivating metals on cracking catalysts | Harold W. Mark, Brent J. Bertus, Dwight L. McKay, Lyle E. Fenska | 1984-07-10 |
| 4415440 | Cracking catalyst improvement with gallium compounds | Dwight L. McKay, Brent J. Bertus | 1983-11-15 |
| 4397767 | Catalyst poisons passivated with tin compounds plus both sulfur and phosphorus | Brent J. Bertus, Dwight L. McKay, H. Wayne Mark | 1983-08-09 |
| 4394324 | Stable antimony organophosphorodithioates | Harold W. Mark, Brent J. Bertus | 1983-07-19 |
| 4383872 | Method of growing a doped III-V alloy layer by molecular beam epitaxy utilizing a supplemental molecular beam of lead | — | 1983-05-17 |
| 4377504 | Cracking catalyst improvement with gallium compounds | Dwight L. McKay, Brent J. Bertus | 1983-03-22 |
| 4348304 | Cracking process and catalyst for same | Brent J. Bertus, Dwight L. McKay | 1982-09-07 |
| 4347206 | Method of extruding polypropylene yarn | — | 1982-08-31 |
| 4347207 | Method of extruding polypropylene yarn | — | 1982-08-31 |
| 4340552 | Melt spinning solution dyed filaments and improved spin pack therefor | — | 1982-07-20 |
| 4324648 | Cracking catalyst poisons passivated with tin compounds plus both sulfur and phosphorus | Brent J. Bertus, Dwight L. McKay, H. Wayne Mark | 1982-04-13 |
| 4303606 | Method of extruding polypropylene yarn | — | 1981-12-01 |
| 4268188 | Process for reducing possibility of leaching of heavy metals from used petroleum cracking catalyst in land fills | Brent J. Bertus, Dwight L. McKay | 1981-05-19 |
| 4257919 | Method of transferring a passivating agent to or from a cracking catalyst | Dwight L. McKay, Brent J. Bertus, H. Wayne Mark | 1981-03-24 |
| 4256564 | Cracking process and catalyst for same containing indium to passivate contaminating metals | Brent J. Bertus, Dwight L. McKay | 1981-03-17 |
| 4225299 | Apparatus for extruding yarn | — | 1980-09-30 |
| 4193961 | Method of extruding polypropylene yarn | — | 1980-03-18 |
| 4193962 | Melt spinning process | — | 1980-03-18 |