Granted Patent
Utility
US 4,741,917 · App. 06/909,155
Alkali metal acid pyrophosphate leavening acid compositions and methods for producing the same
Inventors:
Robert M. Lauck, Robert H. Tieckelmann
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: Sep 19, 1986
Inventors
Robert M. Lauck
Robert H. Tieckelmann
Assignee (at issue)
Stauffer Chemical 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.