John A. Negrych

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Westminster, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing boron carbide armor tiles
- Patent number 4,824,624
- Issue date Apr 25, 1989
- Ceradyne, Inc.
- Richard J. Palicka
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method of bonding ceramic orthodontic appliances
- Patent number 4,820,545
- Issue date Apr 11, 1989
- Ceradyne, Inc.
- John A. Negrych
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE