Granted Patent
Utility
US 6,031,137 · App. 09/087,766
Stable aromatic amine composition, a process for preparing color stable aromatic amines, and the production of light colored aromatic amine-based polyether polyols
Inventor:
Rick L. Adkins
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: May 29, 1998
Inventor
Rick L. Adkins
Assignee (at issue)
Bayer Aktiengesellschaft
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.