William A. Hammann IV

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Centerville, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing amine-formaldehyde microcapsules and photosens...
- Patent number 5,283,015
- Issue date Feb 1, 1994
- The Mead Corporation
- David A. Hutchings
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for producing encapsulated photosensitive composition by al...
- Patent number 5,196,287
- Issue date Mar 23, 1993
- The Mead Corporation
- William A. Hammann
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photosensitive microcapsule imaging system having improved gray scale
- Patent number 5,122,432
- Issue date Jun 16, 1992
- The Mead Corporation
- William A. Hammann
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Microcapsule coating compositions containing coupling agents for im...
- Patent number 4,971,885
- Issue date Nov 20, 1990
- The Mead Corporation
- William A. Hammann
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Recording sheet having improved cohesion and adhesion of microcapsules
- Patent number 4,960,750
- Issue date Oct 2, 1990
- The Mead Corporation
- William A. Hammann
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY