Lloyd R. Welch

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La Canada, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Encryption system based on crossed inverse quasigroups
- Patent number 7,280,663
- Issue date Oct 9, 2007
- University of Southern California
- Solomon W. Golomb
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for modulation encoding data for storage on a...
- Patent number 6,381,724
- Issue date Apr 30, 2002
- Calimetrics, Inc.
- Lloyd R. Welch
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for modulation encoding data for storage on a...
- Patent number 6,148,428
- Issue date Nov 14, 2000
- Calimetrics, Inc.
- Lloyd R. Welch
- G11 - INFORMATION STORAGE
Information Patent Grant
Digital optical sound system
- Patent number 5,271,021
- Issue date Dec 14, 1993
- Cyclotomics, Incorporated
- Elwyn R. Berlekamp
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Digital optical sound system
- Patent number 5,271,022
- Issue date Dec 14, 1993
- Cyclotomics, Incorporated
- Elwyn R. Berlekamp
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Error correction for algebraic block codes
- Patent number 4,633,470
- Issue date Dec 30, 1986
- Cyclotomics, Inc.
- Lloyd R. Welch
- H03 - BASIC ELECTRONIC CIRCUITRY