Granted Patent
Utility
US 5,144,090 · App. 07/711,032
Method for preparing acrolein or methacrolein
Inventors:
Tadatoshi Honda, Tokio Nagayama, Nobuhiko Horiuchi, Jun Kitagawa, Kazunori Kawahara, Masami Murakami
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Jun 6, 1991
Inventors
Tadatoshi Honda
Tokio Nagayama
Nobuhiko Horiuchi
Jun Kitagawa
Kazunori Kawahara
Masami Murakami
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.