Granted Patent
Utility
US 4,684,740 · App. 06/840,757
Production of 2,6-bis (4-hydroxy-3,5-dimethoxyphenyl-3,7-dioxabicyclo (3.3.0) octane
Inventors:
Takayoshi Higuchi, Mitsuhiko Tanahashi, Motoo Mastukura
Patented Case
View Patent ↗
Granted: Aug 4, 1987
Filed: Mar 18, 1986
Inventors
Takayoshi Higuchi
Mitsuhiko Tanahashi
Motoo Mastukura
Assignee (at issue)
Jujo Paper Co., Ltd.
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.