Granted Patent
Utility
US 6,602,498 · App. 09/790,250
N-maleimidyl polymer derivatives
Inventor:
Xiaoming Shen
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: Feb 21, 2001
Inventor
Xiaoming Shen
Assignee (at issue)
Shearwater Corporation
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.