Granted Patent
Utility
US 4,794,158 · App. 07/130,241
Transparent copolyamide from bis(3-methyl-4-amino-cyclohexyl)methane
Inventors:
Masayoshi Hasuo, Hiroshi Urabe, Michio Kawai, Tatsuya Ohsako
Patented Case
View Patent ↗
Granted: Dec 27, 1988
Filed: Dec 8, 1987
Inventors
Masayoshi Hasuo
Hiroshi Urabe
Michio Kawai
Tatsuya Ohsako
Assignee (at issue)
Mitsubishi Kasei Corporation
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.