Granted Patent
Utility
US 6,537,562 · App. 09/331,647
Cosmetic PIT emulsions
Inventors:
Axel Boettcher, Hermann Hensen, Werner Seipel
Patented Case
View Patent ↗
Granted: Mar 25, 2003
Filed: Jun 23, 1999
Inventors
Axel Boettcher
Hermann Hensen
Werner Seipel
Assignee (at issue)
Cognis Deutschland GmbH & Co. KG
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.