Granted Patent
Utility
US 5,889,404 · App. 08/921,412
Discharge ionization detector having efficient transfer of metastables for ionization of sample molecules
Inventors:
Mahmoud F. Abdel-Rahman, William H. Wilson
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Aug 29, 1997
Inventors
Mahmoud F. Abdel-Rahman
William H. Wilson
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.