Granted Patent
Utility
US 6,818,784 · App. 10/180,831
Process for producing aliphatic oligocarbonate diols
Inventors:
Jörg Tillack, Jörg Laue, Herbert Witossek, Andreas Schlemenat
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Jun 26, 2002
Inventors
Jörg Tillack
Jörg Laue
Herbert Witossek
Andreas Schlemenat
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.