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last 30 patents
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Patent Grant
Method for preparing 1,3-dihydroxy-4,6-bis(.alpha.-methyl-.alpha.(4...
Patent number
5,744,653
Issue date
Apr 28, 1998
Mitsui Toatsu Chemicals, Inc.
Mizuo Ito
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Preparation of 6,6'-dihydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane
Patent number
5,399,783
Issue date
Mar 21, 1995
Mitsui Toatsu Chemicals, Inc.
Mizuo Ito
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Epoxy resin derived from the highly pure compound and method for pr...
Patent number
5,304,624
Issue date
Apr 19, 1994
Mitsui Toatsu Chemicals, Incorporated
Naru Koike
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for preparing highly pure 1,1,2,2-tetrakis(4-hydroxy-3,5-dim...
Patent number
5,157,165
Issue date
Oct 20, 1992
Mitsui Toatsu Chemicals, Inc.
Naru Koike
C07 - ORGANIC CHEMISTRY