Granted Patent
Utility
US 4,820,870 · App. 07/033,916
Acidic alkali citrate and compositions for adjusting the ph of urine
Inventors:
Rolf Madaus, Werner Stumpf, Klaus Gorler, Alfonso Carcasona-Beltran
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Apr 1, 1987
Inventors
Rolf Madaus
Werner Stumpf
Klaus Gorler
Alfonso Carcasona-Beltran
Assignee (at issue)
Dr. Madaus GmbH & Co
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.