Issued Patents All Time
Showing 451–475 of 537 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818800 | Polymerization process utilizing a silica-supported chromium oxide catalyst and boron-containing adjuvant | James N. Short | 1989-04-04 |
| 4806513 | Silicon and fluorine-treated alumina containing a chromium catalyst and method of producing same | Paul D. Smith, Donald D. Norwood | 1989-02-21 |
| 4803253 | Ethylene polymer produced using a catalyst comprising a phosphate and with a bis-(cyclopentadienyl)chromium(II) compound | James N. Short | 1989-02-07 |
| 4735931 | In situ comonomer generation in olefin polymerization | Douglas D. Klendworth, Donald D. Norwood, Eric T. Hsieh, Elizabeth A. Boggs | 1988-04-05 |
| 4717701 | Olefin polymerization | — | 1988-01-05 |
| 4690990 | Polymerization process using a catalyst comprising a phosphate and with a bis-(cyclopentadienyl)chromium(II) compound | James N. Short | 1987-09-01 |
| 4681266 | Method of particulating agglomerated catalyst materials | Ronald G. Mason, Emory W. Pitzer, David L. Rogers, James W. Waterman | 1987-07-21 |
| 4681866 | Polymerization catalyst, method of making and use therefor | Paul D. Smith | 1987-07-21 |
| 4663403 | Polymerization of olefins | — | 1987-05-05 |
| 4659690 | Acid agglomeration of refractory gel in polar organic diluent | Emory W. Pitzer | 1987-04-21 |
| 4640964 | Olefin polymerization with polyphosphate supported chromium catalysts | Marvin M. Johnson | 1987-02-03 |
| 4622371 | Olefin polymerization | — | 1986-11-11 |
| 4619980 | Polymerization catalyst, method of making and use therefor | Paul D. Smith | 1986-10-28 |
| 4596862 | Olefin polymerization using chromium on fluorided aluminophosphate | Emory W. Pitzer, Elizabeth A. Boggs, Donald D. Norwood, Fay W. Bailey | 1986-06-24 |
| 4593146 | Isomerization process and catalyst therefor | Marvin M. Johnson, Gerhard P. Nowack | 1986-06-03 |
| 4565795 | Polymerization and catalysts | James N. Short | 1986-01-21 |
| 4560733 | Polymerization and catalyst | Shirley J. Martin nee Sturdy | 1985-12-24 |
| 4559394 | Olefin polymerization using activated chromium catalyst treated with tertiary alcohol | — | 1985-12-17 |
| 4552937 | Polymerization catalyst system | — | 1985-11-12 |
| 4547557 | Silica-titania cogel from two-step hydrolysis | — | 1985-10-15 |
| 4547479 | Polyphosphate in chromium catalyst support | Marvin M. Johnson | 1985-10-15 |
| 4540757 | Polymerization and catalyst | — | 1985-09-10 |
| 4537869 | Tetravalent titanium treated calcined vanadium catalyst with trialkylaluminum cocatalyst | — | 1985-08-27 |
| 4537928 | Rubber compositions containing aluminum phosphate | Marvin M. Johnson | 1985-08-27 |
| 4535070 | Acrylamide polymer used to reduce fines in aluminum phosphate gel | Marvin M. Johnson, Gil R. Hawley, John Westerman, Paul D. Smith | 1985-08-13 |