Richard Freisen

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Kirkland, CA

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Patents Grantslast 30 patents

Information Patent Grant
Tri-aryl-substituted-ethane PDE4 inhibitors
- Patent number 6,841,564
- Issue date Jan 11, 2005
- Merck Frosst Canada & Co.
- Richard Freisen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Tri-aryl-substituted-ethane PDE4 inhibitors
- Patent number 6,399,636
- Issue date Jun 4, 2002
- Merck Frosst Canada & Co.
- Richard Freisen
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Tri-aryl-substituted-ethane PDE4 inhibitors
- Publication number 20020173661
- Publication date Nov 21, 2002
- Merck Frosst Canada & Co.
- Richard Freisen
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Tri-aryl-substituted-ethane PDE4 inhibitors
- Publication number 20020013347
- Publication date Jan 31, 2002
- Richard Freisen
- C07 - ORGANIC CHEMISTRY