Granted Patent
Utility
US 4,424,302 · App. 06/176,803
Method of forming polymer particles
Inventors:
Jacob Block, Alan S. Michaels
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Aug 11, 1980
Inventors
Jacob Block
Alan S. Michaels
Assignee (at issue)
W. R. Grace & Co.
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.