James R. Hazen

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Coventry, RI, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for bis(4-aminophenyl)hexafluoropropane
- Patent number 5,011,997
- Issue date Apr 30, 1991
- Hoechst Celanese Corp.
- James R. Hazen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Azo dimers containing the hexafluoroisopropylidene group
- Patent number 4,906,741
- Issue date Mar 6, 1990
- Hoechst Celanese Corporation
- James R. Hazen
Information Patent Grant
Process for production of 3-(hydroxyphenylphosphinyl)-propanoic acid
- Patent number 4,769,182
- Issue date Sep 6, 1988
- Hoechst Celanese Corporation
- James R. Hazen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Solid phase acylation of aminosulfonic acids
- Patent number 4,749,523
- Issue date Jun 7, 1988
- Hoechst Celanese Corporation
- James R. Hazen
- C07 - ORGANIC CHEMISTRY