Granted Patent
Utility
US 6,509,284 · App. 09/472,632
Layer materials treated with surfacant-modified chelating agents
Inventors:
Roger Bradshaw Quincy, III, Garry Roland Woltman, Yuelong Liu, Patricia Hsiaoyin Hwang
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Dec 28, 1999
Inventors
Roger Bradshaw Quincy, III
Garry Roland Woltman
Yuelong Liu
Patricia Hsiaoyin Hwang
Assignee (at issue)
Kimberly-Clark Worldwide, Inc.
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.