Granted Patent
Utility
US 5,132,349 · App. 07/696,844
Preparation process of resin composition having phenolic hydroxyl groups
Inventors:
Shigeru Iimuro, Masahiko Asano, Toshimiki Shimizu
Patented Case
View Patent ↗
Granted: Jul 21, 1992
Filed: May 7, 1991
Inventors
Shigeru Iimuro
Masahiko Asano
Toshimiki Shimizu
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.