Granted Patent
Utility
US 5,573,589 · App. 08/402,452
Cement compositions containing a sulfated polysaccharide and method
Inventors:
Yoshio Tanaka, Toshiyuki Uryu, Minoru Yaguchi
Patented Case
View Patent ↗
Granted: Nov 12, 1996
Filed: Mar 9, 1995
Inventors
Yoshio Tanaka
Toshiyuki Uryu
Minoru Yaguchi
Assignee (at issue)
Sandoz AG
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.