Granted Patent
Utility
US 4,642,346 · App. 06/747,631
Anhydrous crystalline 9-(1,3-dihydroxy-2-propoxymethyl)guanine
Inventors:
Tai Wah Chan, Huong Thi Thanh Nguyen
Patented Case
View Patent ↗
Granted: Feb 10, 1987
Filed: Jun 24, 1985
Inventors
Tai Wah Chan
Huong Thi Thanh Nguyen
Assignee (at issue)
Syntex (U.S.A.) LLC
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.