Katsuhiro Yoshikawa

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Patents Grantslast 30 patents

Information Patent Grant
Imidobisphosphoric acids, and use thereof
- Patent number 5,935,947
- Issue date Aug 10, 1999
- Hoechst Aktiengesellschaft
- Christoph Naumann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Imidobisphosphoric acids, and use therefor
- Patent number 5,733,897
- Issue date Mar 31, 1998
- Hoechst Aktiengesellschaft
- Christoph Naumann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Heterocyclic iminobismethylenebisphosphonic acid derivatives
- Patent number 5,441,945
- Issue date Aug 15, 1995
- Hoechst Japan Limited
- Katsuhiro Yoshikawa
- C07 - ORGANIC CHEMISTRY