James F. Dubil

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Warrenton, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Image processing system and method employing combined black and whi...
- Patent number 4,924,521
- Issue date May 8, 1990
- International Business Machines Corporation
- Raymond F. Dinan
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Document image processing system
- Patent number 4,888,812
- Issue date Dec 19, 1989
- International Business Machines Corporation
- Raymond F. Dinan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Universal transversal filter chip
- Patent number 4,161,706
- Issue date Jul 17, 1979
- International Business Machines Corporation
- James F. Dubil
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Bucket brigade circuit for signal scaling
- Patent number 4,110,835
- Issue date Aug 29, 1978
- International Business Machines Corporation
- James F. Dubil
- G06 - COMPUTING CALCULATING COUNTING