Granted Patent
Utility
US 6,376,604 · App. 09/740,556
Method for the preparation of 1-benzotriazolylcarbonate esters of poly(ethylene glycol)
Inventor:
Antoni Kozlowski
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Dec 18, 2000
Inventor
Antoni Kozlowski
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.