Granted Patent
Utility
US 4,933,128 · App. 07/375,907
Formation of melt-spun acrylic fibers which are well suited for thermal conversion to high strength carbon fibers
Inventors:
Gene P. Daumit, Yoon Seok Ko, Christopher R. Slater, Jozef G. Venner, Chi C. Young, Maurice M. Zwick
Patented Case
View Patent ↗
Granted: Jun 12, 1990
Filed: Jul 6, 1989
Inventors
Gene P. Daumit
Yoon Seok Ko
Christopher R. Slater
Jozef G. Venner
Chi C. Young
Maurice M. Zwick
Assignee (at issue)
BASF SE
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.