Granted Patent
Utility
US 6,479,658 · App. 09/744,210
Method for cyclizing hydrolysis of an aminonitrile compound into lactam
Inventors:
Jean-Pierre Brunelle, Aline Seigneurin, Lionel Sever
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Jun 4, 2001
Inventors
Jean-Pierre Brunelle
Aline Seigneurin
Lionel Sever
Assignee (at issue)
Rhodia Fiber & Resin Intermediates
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.