Granted Patent
Utility
US 6,319,975 · App. 09/429,537
Composition for air permeable film of high processability and permeability and production of air permeable film
Inventors:
Young-Keun Lee, Young Wook Kim, Tae Joon Kim, Byoung Cheon Jo
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Oct 28, 1999
Inventors
Young-Keun Lee
Young Wook Kim
Tae Joon Kim
Byoung Cheon Jo
Assignee (at issue)
SK HOLDINGS CO., LTD.
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.