Granted Patent
Utility
US 6,418,982 · App. 09/718,111
Process of bulk filling
Inventors:
Jack Yongfeng Zhang, Mary Ziping Luo, Frank Zhishi Xia
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Nov 21, 2000
Inventors
Jack Yongfeng Zhang
Mary Ziping Luo
Frank Zhishi Xia
Assignee (at issue)
Amphastar Pharmaceuticals, 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.