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Kelkheim, DE
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last 30 patents
Information
Patent Grant
Process for producing ceramic microstructures from polymeric precur...
Patent number
5,698,485
Issue date
Dec 16, 1997
Hoechst Aktiengesellschaft
Martin Bruck
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Optical waveguide moldings made from silicon nitride and a method o...
Patent number
5,483,614
Issue date
Jan 9, 1996
Hoechst Aktiengesellschaft
Martin Bruck
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Optical moldings made from silicon nitride, and a process for their...
Patent number
5,358,746
Issue date
Oct 25, 1994
Hoechst Aktiengesellschaft
Martin Bruck
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Fiber-reinforced composite materials and process for their preparation
Patent number
5,225,243
Issue date
Jul 6, 1993
Hoechst Aktiengesellschaft
Martin Bruck
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polysubstituted chlorine-containing silazane polymers, process for...
Patent number
5,196,556
Issue date
Mar 23, 1993
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Polymeric hydridochlorosilazanes, process for their preparation, ce...
Patent number
5,189,132
Issue date
Feb 23, 1993
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Silazane polymers containing SiCl groups, process for their prepara...
Patent number
5,187,252
Issue date
Feb 16, 1993
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Polymeric chlorosilazanes, process for their preparation, ceramic m...
Patent number
5,182,411
Issue date
Jan 26, 1993
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Process of producing a ceramic/fiber composite using a molten polys...
Patent number
5,176,941
Issue date
Jan 5, 1993
Hoechst Aktiengesellschaft
Marcellus Peuckert
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Sinterable ceramic powder, process for its production, silicon nitr...
Patent number
5,162,272
Issue date
Nov 10, 1992
Hoechst Aktiengesellschaft
Marcellus Peuckert
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
High-strength ceramic composite, process for its preparation and it...
Patent number
5,139,717
Issue date
Aug 18, 1992
Hoechst Aktiengesellschaft
Marcellus Peuckert
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
.alpha., .omega.-chlorosilazanes, and a process for their preparation
Patent number
5,138,079
Issue date
Aug 11, 1992
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Chlorine-containing silazane polymers, process for their preparatio...
Patent number
5,100,975
Issue date
Mar 31, 1992
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Polysilazanes, process for the preparation thereof, silicon, nitrid...
Patent number
5,084,423
Issue date
Jan 28, 1992
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Sinterable ceramic powder, process for its preparation, silicon nit...
Patent number
5,081,078
Issue date
Jan 14, 1992
Hoechst Aktiengesellschaft
Marcellus Peuckert
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Polymeric hydridosilazanes, processes for the preparation thereof,...
Patent number
5,081,080
Issue date
Jan 14, 1992
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Chlorine-containing silazane polymers, process for their preparatio...
Patent number
5,032,663
Issue date
Jul 16, 1991
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Polysilazanes, processes for their preparation, ceramic materials w...
Patent number
5,030,702
Issue date
Jul 9, 1991
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Polymeric ethylene-bridged chlorosilazanes, process for their prepa...
Patent number
5,011,801
Issue date
Apr 30, 1991
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Polymeric hydridothiosilazanes, processes for the preparation there...
Patent number
4,952,670
Issue date
Aug 28, 1990
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Polysilazanes, processes for their preparation, ceramic materials w...
Patent number
4,946,920
Issue date
Aug 7, 1990
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Polymeric hydridosilazanes, processes for the preparation thereof,...
Patent number
4,939,225
Issue date
Jul 3, 1990
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Polysilazanes, process for the preparation thereof, silicon nitride...
Patent number
4,935,481
Issue date
Jun 19, 1990
Hoechst Aktiengesellschaft
Tilo Vaahs
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Si,Si'diorganyl-N-alkyl-tetrachloro-disilazanes and a process for t...
Patent number
4,882,448
Issue date
Nov 21, 1989
Hoechst Aktiengesellschaft
Tilo Vaahs
C07 - ORGANIC CHEMISTRY