Inventor
BREKNER MICHAEL-JOACHIM
DE30 patents
⚠️ This page may combine multiple inventors who share the name “BREKNER MICHAEL-JOACHIM”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOECHST AG
24 patentsUS5087677AFeb 11, 1992
Process for the preparation of cycloolefin polymers
HOECHST AG268 citations99
US5552504ASep 3, 1996
Semi-crystalline cycloolefin copolymer film
HOECHST AG83 citations96
US5534606AJul 9, 1996
Rigid cycloolefin copolymer film
HOECHST AG67 citations96
US5422409AJun 6, 1995
Cycloolefin (co)polymers with a narrow molecular weight distribution and a process for the preparation thereof
HOECHST AG59 citations96
US5359001AOct 25, 1994
Polymer blends of cycloolefin polymers and polyolefins
HOECHST AG66 citations96
US5331057AJul 19, 1994
Cycloolefin block copolymers and a process for their preparation
HOECHST AG60 citations96
US5324801AJun 28, 1994
Process for the preparation of chemically homogeneous cycloolefin copolymers
HOECHST AG63 citations96
US5637400AJun 10, 1997
Cycloolefin copolymers having low melt viscosity and low optical attenuation
HOECHST AG75 citations95
US5428098AJun 27, 1995
Fiber-reinforced cycloolefin copolymer material, process for its preparation and shaped articles from the material
HOECHST AG70 citations95
US5733991AMar 31, 1998
Process for preparing cycloolefin polymer
HOECHST AG35 citations93
US5602219AFeb 11, 1997
Process for preparing cycloolefin copolymers
HOECHST AG49 citations93
US5545829AAug 13, 1996
Process for preparing cycloolefin copolymers
HOECHST AG36 citations93
US5498677AMar 12, 1996
Process for preparation and purification of material of a cycloolefin copolymer
HOECHST AG43 citations93
US5475060ADec 12, 1995
Cycloolefin block copolymers and a process for their preparation
HOECHST AG31 citations93
US5371158ADec 6, 1994
Bulk polymerization using specific metallocene catalysts for the preparation of cycloolefin polymers
HOECHST AG53 citations93
US5744664AApr 28, 1998
Cycloolefin copolymers (COCS) as substrate material for liquid-crystal displays
HOECHST AG40 citations92
US5583192ADec 10, 1996
Flexible cycloolefin copolymer film and method of preparing same
HOECHST AG48 citations92
US5719095AFeb 17, 1998
Supported catalyst system, the preparation thereof, and the use thereof for the polymerization of olefins
HOECHST AG32 citations91
US5646220AJul 8, 1997
Cycloolefin block copolymers and a process for their preparation
HOECHST AG11 citations74
US5439722AAug 8, 1995
Substrate composed of at least one cycloolefin copolymer for recording media and process for producing it
HOECHST AG16 citations74
US6214951B1Apr 10, 2001
Cycloolefin copolymers having high tear strength and low optical attenuation
HOECHST AG12 citations73
US5422397AJun 6, 1995
Binary alloys based on polyether-amides and cycloolefin polymers
HOECHST AG8 citations73
US5789492AAug 4, 1998
Weathering-resistant polymer alloys
HOECHST AG10 citations69
US5373081ADec 13, 1994
Polyether ketones and polyether sulfones based on phenylindane, and the use thereof for optical systems
HOECHST AG4 citations59