Granted Patent
Utility
US 5,846,926 · App. 08/871,107
Nonionic gemini surfactants with three hydrophilic heads and two lipophilic tails
Inventors:
David J. Tracy, Ruoxin Li, Jiang Yang
Patented Case
View Patent ↗
Granted: Dec 8, 1998
Filed: Jun 9, 1997
Inventors
David J. Tracy
Ruoxin Li
Jiang Yang
Assignee (at issue)
Rhodia, 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.