Richard E. Crooks

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Bay City, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Preparation of symmetrical tetrachloropyridine
- Patent number 4,322,538
- Issue date Mar 30, 1982
- The Dow Chemical Company
- Gail E. Vrieland
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 4-bromotetrachloropyridine
- Patent number 4,321,389
- Issue date Mar 23, 1982
- The Dow Chemical Company
- G. Edwin Vrieland
- C07 - ORGANIC CHEMISTRY