Granted Patent
Utility
US 6,549,674 · App. 09/687,467
Image compression based on tiled wavelet-like transform using edge and non-edge filters
Inventors:
Charles K. Chui, Hong Gao, Lefan Zhong
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Oct 12, 2000
Inventors
Charles K. Chui
Hong Gao
Lefan Zhong
Assignee (at issue)
PicSurf, 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.