Karl-Heinz Walter

Person

Grafing, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Integratable activation module for passive electrooptical displays
- Patent number 4,392,131
- Issue date Jul 5, 1983
- Siemens Aktiengesellschaft
- Karl-Heinz Walter
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Arrangement for brightness gains of passive display units
- Patent number 4,364,640
- Issue date Dec 21, 1982
- Siemens Aktiengesellschaft
- Hans Kruger
- G02 - OPTICS
Information Patent Grant
Electro-optical display device
- Patent number 4,291,304
- Issue date Sep 22, 1981
- Siemens Aktiengesellschaft
- Karl-Heinz Walter
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Process and apparatus for displaying an image in front of an optica...
- Patent number 4,269,480
- Issue date May 26, 1981
- Siemens Aktiengesellschaft
- Hans Krueger
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Liquid crystal cell
- Patent number 4,247,174
- Issue date Jan 27, 1981
- Siemens Aktiengesellschaft
- Karl-Heinz Walter
- G02 - OPTICS
Information Patent Grant
Method for the operation of a display device having a bistable liqu...
- Patent number 4,212,010
- Issue date Jul 8, 1980
- Siemens Aktiengesellschaft
- Karl H. Walter
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Liquid crystal display with bistable cholesteric liquid crystal layer
- Patent number 4,105,288
- Issue date Aug 8, 1978
- Siemens Aktiengesellschaft
- Walter Geffcken
- G02 - OPTICS

Karl-Heinz Walter

Person

Patents Grantslast 30 patents

Integratable activation module for passive electrooptical displays

Arrangement for brightness gains of passive display units

Electro-optical display device

Process and apparatus for displaying an image in front of an optica...

Liquid crystal cell

Method for the operation of a display device having a bistable liqu...

Liquid crystal display with bistable cholesteric liquid crystal layer