Granted Patent
Utility
US 4,968,846 · App. 07/217,849
Method for the prevention of post oxidation of methacrolein
Inventors:
Morimasa Kuragano, Kozo Iwasaki, Yoshio Koyama, Takeshi Isobe, Hirozo Segawa, Katsuji Yoguchi
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Jul 12, 1988
Inventors
Morimasa Kuragano
Kozo Iwasaki
Yoshio Koyama
Takeshi Isobe
Hirozo Segawa
Katsuji Yoguchi
Assignees (at issue)
Mitsui Toatsu Chemicals, Incorporated
Kyowa Gas Chemical Industry 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.