Granted Patent
Utility
US 4,873,373 · App. 06/890,143
Process for preparation of 3-phenoxybenzyl 2-(4-alkoxyphenyl)-2-methylpropyl ethers
Inventors:
Mitsumasa Umemoto, Tamotsu Asano, Hironobu Horie, Akinobu Takagi, Nobuyasu Tamura, Takeshi Nishida
Patented Case
View Patent ↗
Granted: Oct 10, 1989
Filed: Jul 16, 1986
Inventors
Mitsumasa Umemoto
Tamotsu Asano
Hironobu Horie
Akinobu Takagi
Nobuyasu Tamura
Takeshi Nishida
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.