Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877763 | Supported chromium oxide/boron catalyst | James N. Short | 1989-10-31 |
| 4855271 | Catalyst and polymerization of olefins | Shirley J. Martin | 1989-08-08 |
| 4843133 | Polymerization and catalysts | James N. Short | 1989-06-27 |
| 4820785 | In situ comonomer generation in olefin polymerization | Douglas D. Klendworth, Donald D. Norwood, Eric T. Hsieh, Elizabeth A. Boggs | 1989-04-11 |
| 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 |