Granted Patent
Utility
US 5,196,554 · App. 07/695,470
Aluminum bis(hydroxymethyl)phosphinate, and a process for the preparation of bis(hydroxymethyl)phosphinates
Inventor:
Jurgen Svara
Patented Case
View Patent ↗
Granted: Mar 23, 1993
Filed: May 3, 1991
Inventor
Jurgen Svara
Assignee (at issue)
Hoechst GmbH
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.