Granted Patent
Utility
US 4,339,462 · App. 06/214,295
Antimicrobial 3-hydroxydiphenyl ethers
Inventors:
Rene' Muntwyler, Kurt Burdeska
Patented Case
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Granted: Jul 13, 1982
Filed: Dec 8, 1980
Inventors
Rene' Muntwyler
Kurt Burdeska
Assignee (at issue)
Ciba-Geigy
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.