Granted Patent
Utility
US 4,496,493 · App. 06/369,307
Phosphorous esters of cyanohydrins
Inventors:
Leonard E. Hodakowski, Hafez M. Ayad
Patented Case
View Patent ↗
Granted: Jan 29, 1985
Filed: Apr 16, 1982
Inventors
Leonard E. Hodakowski
Hafez M. Ayad
Assignee (at issue)
Union Carbide Corporation
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.