Helmut L. Kayan

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Redwood City, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Rotary apparatus for data card scanning
- Patent number 5,225,666
- Issue date Jul 6, 1993
- Verifone, Inc.
- Carmelo S. Amarena
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Rotary data card scanning apparatus
- Patent number 5,175,423
- Issue date Dec 29, 1992
- Verifone, Inc.
- Helmut L. Kayan
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Foolproof coupon redemption system
- Patent number 5,008,519
- Issue date Apr 16, 1991
- William R. Cunningham
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Magnetic tape transport
- Patent number 3,940,791
- Issue date Feb 24, 1976
- Ampex Corporation
- Helmut L. Kayan
- G11 - INFORMATION STORAGE