Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5057372 | Multilayer film and laminate for use in producing printed circuit boards | Stephen M. Imfeld | 1991-10-15 |
| 4496661 | High efficiency catalyst for polymerizing olefins | — | 1985-01-29 |
| 4451626 | Process for polymerizing alpha-olefins | Donald F. Birkelbach | 1984-05-29 |
| 4425464 | Neutralizing polyethylene catalyst residues | James A. Allen | 1984-01-10 |
| 4415712 | Polymerizing olefins with catalysts containing the reaction product of a transition metal compound and a boron compound | Larry E. Freyer | 1983-11-15 |
| 4412939 | Reaction products of transition metal compounds and boron compounds and catalysts prepared therefrom | Larry E. Freyer | 1983-11-01 |
| 4409126 | Ultra high efficiency catalyst for polymerizing olefins | Donald F. Birkelbach | 1983-10-11 |
| 4408025 | Process for polymerizing olefins | Kirby Lowery, Jr., Ronald L. Gibbs | 1983-10-04 |
| 4399056 | Organo zirconium-chromium mixtures, catalyst prepared therefrom and polymerization of olefins therewith | — | 1983-08-16 |
| 4399053 | High efficiency catalyst containing titanium, zirconium and zinc for polymerizing olefins | Donald F. Birkelbach, Kirby Lowery, Jr. | 1983-08-16 |
| 4396748 | Process for polymerizing alpha-olefins | — | 1983-08-02 |
| 4381382 | Polymerization of olefins from catalysts prepared from organo zirconium-chromium compounds | Fred L. Vance, Jr. | 1983-04-26 |
| 4381253 | Ultra high efficiency catalyst for polymerizing olefins | — | 1983-04-26 |
| 4380508 | Ultra high efficiency catalyst for polymerizing olefins | Donald F. Birkelbach | 1983-04-19 |
| 4379760 | High efficiency catalyst for polymerizing olefins | Kirby Lowery, Jr., Ronald L. Gibbs | 1983-04-12 |
| 4376065 | Organo zirconium-chromium compound, catalyst prepared therefrom and polymerization of olefins therewith | Fred L. Vance, Jr. | 1983-03-08 |
| 4361685 | Polymerization of olefins in the presence of catalyst prepared from organo zirconium-chromium mixtures | — | 1982-11-30 |
| 4356111 | High efficiency catalyst containing titanium and zirconium for polymerizing olefins | Kirby Lowery, Jr. | 1982-10-26 |
| 4323665 | High efficiency catalyst for polymerizing olefins | Kirby Lowery, Jr., Donald F. Birkelbach | 1982-04-06 |
| 4310648 | Polymerization of olefins in the presence of a catalyst containing titanium and zirconium | Kirby Lowery, Jr. | 1982-01-12 |
| 4308369 | High efficiency catalyst for polymerizing olefins | Donald F. Birkelbach, Kirby Lowery, Jr. | 1981-12-29 |
| 4269733 | Ultra high efficiency catalyst for polymerizing olefins | — | 1981-05-26 |
| 4250286 | Ultra high efficiency catalyst for polymerizing olefins | — | 1981-02-10 |
| 4238355 | High efficiency catalyst for polymerizing olefins | Donald F. Birkelbach, Kirby Lowery, Jr. | 1980-12-09 |
| 4224186 | High efficiency catalyst for polymerizing olefins | Kirby Lowery, Jr., Donald F. Birkelbach | 1980-09-23 |