Granted Patent
Utility
US 4,970,323 · App. 07/370,211
Preparation process of N-substituted monochlorosuccinimides
Inventors:
Mihaya Matsukawa, Masaru Wada, Hiroshi Suizu, Masayuki Furuya, Teruyuki Nagata
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Jun 22, 1989
Inventors
Mihaya Matsukawa
Masaru Wada
Hiroshi Suizu
Masayuki Furuya
Teruyuki Nagata
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.