Kurt Ehrat

Person

Zurich, CH

People

Patents Grantslast 30 patents

Information Patent Grant
Data carrier card
- Patent number 4,362,930
- Issue date Dec 7, 1982
- Zeag Systems AG
- Kurt Ehrat
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Card-like data carrier
- Patent number 4,361,757
- Issue date Nov 30, 1982
- Zeag Systems AG
- Kurt Ehrat
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Process for assessing the quality of a printed product
- Patent number 4,303,832
- Issue date Dec 1, 1981
- GRETAG Aktiengesellschaft
- Kurt Ehrat
- G07 - CHECKING-DEVICES
Information Patent Grant
Apparatus for the production and display of moving pictures
- Patent number 4,300,298
- Issue date Nov 17, 1981
- Kurt Ehrat
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Method and apparatus for synchronizing the ciphering and decipherin...
- Patent number 4,145,569
- Issue date Mar 20, 1979
- GRETAG Aktiengesellschaft
- Kurt Ehrat
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Method and apparatus for ciphering and deciphering messages
- Patent number 4,145,568
- Issue date Mar 20, 1979
- GRETAG Aktiengesellschaft
- Kurt Ehrat
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for testing the print quality of printed texts...
- Patent number 4,143,279
- Issue date Mar 6, 1979
- GRETAG Aktiengesellschaft
- Kurt Ehrat
- G07 - CHECKING-DEVICES
Information Patent Grant
Method of assessing a printed article
- Patent number 4,139,779
- Issue date Feb 13, 1979
- GRETAG Aktiengesellschaft
- Kurt Ehrat
- G07 - CHECKING-DEVICES
Information Patent Grant
Method and apparatus for determining the relative positions of corr...
- Patent number 4,131,879
- Issue date Dec 26, 1978
- Gretag Aktiengesellschaft
- Kurt Ehrat
- G07 - CHECKING-DEVICES
Information Patent Grant
Method and apparatus for preparing and assessing payment documents
- Patent number 3,990,558
- Issue date Nov 9, 1976
- Gretag Aktiengesellschaft
- Kurt Ehrat
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for transmitting and receiving electrical spee...
- Patent number 3,959,592
- Issue date May 25, 1976
- Gretag Aktiengesellschaft
- Kurt Ehrat
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Person

Patents Grantslast 30 patents

Data carrier card

Card-like data carrier

Process for assessing the quality of a printed product

Apparatus for the production and display of moving pictures

Method and apparatus for synchronizing the ciphering and decipherin...

Method and apparatus for ciphering and deciphering messages

Method and apparatus for testing the print quality of printed texts...

Method of assessing a printed article

Method and apparatus for determining the relative positions of corr...

Method and apparatus for preparing and assessing payment documents

Method and apparatus for transmitting and receiving electrical spee...