Granted Patent
Utility
US 4,289,871 · App. 06/134,592
Method to increase reactor capacity for polycondensation of polyesters
Inventors:
Hugh H. Rowan, Max B. Mueller, Stanley D. Lazarus
Patented Case
View Patent ↗
Granted: Sep 15, 1981
Filed: Mar 27, 1980
Inventors
Hugh H. Rowan
Max B. Mueller
Stanley D. Lazarus
Assignee (at issue)
Allied Chemical 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.