Donald H. Ennis

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Towanda, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of producing crystalline ammonium metatungstate
- Patent number 4,612,181
- Issue date Sep 16, 1986
- GTE Products Corporation
- Carl W. Boyer
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of producing crystalline ammonium metatungstate
- Patent number 4,612,183
- Issue date Sep 16, 1986
- GTE Products Corporation
- Tai K. Kim
- C01 - INORGANIC CHEMISTRY