Granted Patent
Utility
US 4,814,111 · App. 06/928,508
Process for purification of phospholipids
Inventors:
John J. Kearns, Paul A. Tremblay, Raymond J. ROBEY, Swaminathan Sunder
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Nov 7, 1986
Inventors
John J. Kearns
Paul A. Tremblay
Raymond J. ROBEY
Swaminathan Sunder
Assignee (at issue)
Air Products and Chemicals, Inc.
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.