Granted Patent
Utility
US 4,281,126 · App. 05/873,322
N-Substituted 1,2,3,4-tetrahydropyrimidines, Hexahydropyrimidines and process for their preparation
Inventor:
Bernardus A. Oude Alink
Patented Case
View Patent ↗
Granted: Jul 28, 1981
Filed: Jan 30, 1978
Inventor
Bernardus A. Oude Alink
Assignee (at issue)
Petrolite 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.