Donald E. Betzold

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Friendswood, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Proppant containing bondable particles and removable particles
- Patent number 6,328,105
- Issue date Dec 11, 2001
- Technisand, Inc.
- Donald E. Betzold
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Proppant containing bondable particles and removable particles
- Patent number 6,114,410
- Issue date Sep 5, 2000
- Technisand, Inc.
- Donald E. Betzold
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...