Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE35346 | Process for the polymerisation of ethylene or the copolymerisation of ethylene and alpha-olefins in a fluidised bed in the presence of a chromium based catalyst | John G. Speakman | 1996-10-01 |
| RE35324 | Prepolymers of olefins containing a chromium oxide and a granular refractory oxide support | John G. Speakman | 1996-09-03 |
| 5439995 | Catalyst and prepolymer used for the preparation of polyolefins | Philippe Bres, Christine Chabrand, Erick Daire | 1995-08-08 |
| 5252688 | Process for preparing a Ziegler-Natta type catalyst | Patrick Behue | 1993-10-12 |
| 5225458 | Powder of (co)polymer of one or more 1-olefins blended with pulverulent inorganic material | Joelle Collomb | 1993-07-06 |
| 5208109 | Process for the polymerization and copolymerization of alpha-olefins in a fluidized bed | Laszlo Havas, Stylianos Sandis, Alain Blaya, Pierre Crouzet | 1993-05-04 |
| 5208303 | Process for preparing a vanadium-based catalyst suitable for olefin polymerization | — | 1993-05-04 |
| 5165998 | Prepolymers of olefins containing a chromiumoxide and a granular refractory oxide support | John G. Speakman | 1992-11-24 |
| 5137996 | Ziegler-natta catalyst | Louis Bordere | 1992-08-11 |
| 5106804 | Catalyst and prepolymer used for the preparation of polyolefins | Philippe Bres, Christine Chabrand, Erick Daire | 1992-04-21 |
| 5098875 | Process for preparing a Ziegler-Natta type catalyst | Patrick Behue | 1992-03-24 |
| 5087522 | Process for the polymerization and copolymerization of alpha-olefins in a fluidized bed | Laszlo Havas, Stylianos Sandis, Alain Blaya, Pierre Crouzet | 1992-02-11 |
| 5070054 | Process for preparing a vanadium-based catalyst suitable for olefin polymerization | Philippe Bres | 1991-12-03 |
| 5063110 | Composition comprising prepolymer powder and pulverulent inorganic material | Joelle Collomb | 1991-11-05 |
| 5059570 | Process for preparing a vanadium/titanium based catalyst suitable for olefin polymerization | Philippe Bres | 1991-10-22 |
| 5032560 | Ziegler-natta catalyst | Louis Bordere | 1991-07-16 |
| 4970279 | Process for polymerizing one or more 1-olefins in the gas phase in the presence of pulverulent inorganic material | Joelle Collomb | 1990-11-13 |
| 4960741 | Ziegler-Natta catalyst | Stylianos Sandis | 1990-10-02 |
| 4910271 | Process for the polymerisation of ethylene or the copolymerisation of ethylene and alpha-olefins in a fluidised bed in the presence of a chromium based catalyst | John G. Speakman | 1990-03-20 |
| 4797461 | Amorphous high molecular weight copolymers of ethylene and alpha-olefins | Marie-Line Aubanel | 1989-01-10 |
| 4721763 | Process for the polymerization and copolymerization of alpha-olefins in fluidized bed | Laszlo Havas, Stylianos Sandis, Alain Blaya, Pierre Crouzet | 1988-01-26 |
| 4673662 | Catalysts for the polymerization and copolymerization of propylene and polymerization processes using these catalysts | — | 1987-06-16 |