Granted Patent
Utility
US 6,132,750 · App. 09/108,670
Particles of cross-linked proteins and polysaccharides with hydroxamic groups for chelating metals and their uses notably in cosmetics
Inventors:
Eric Perrier, Chantal Buffevant, Isabelle Bonnet, Marie-Christine Levy
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Jul 1, 1998
Inventors
Eric Perrier
Chantal Buffevant
Isabelle Bonnet
Marie-Christine Levy
Assignee (at issue)
Coletica
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.