Granted Patent
Utility
US 4,703,067 · App. 07/016,262
Process for preparing dry solid water absorbing polyacrylate resin
Inventors:
Muneharu Mikita, Shozo Tanioku, Takayasu Touda
Patented Case
View Patent ↗
Granted: Oct 27, 1987
Filed: Feb 19, 1987
Inventors
Muneharu Mikita
Shozo Tanioku
Takayasu Touda
Assignee (at issue)
American Colloid Company
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.