IP Library › Granted Patent US 5,844,237
Granted Patent Utility
US 5,844,237 · App. 08/791,346

Electrospray and atmospheric pressure chemical ionization sources

Inventors: Craig M. Whitehouse, J. Fred Banks, Clement Catalano
Patented Case View Patent ↗
Granted: Dec 1, 1998 Filed: Jan 31, 1997
Inventors
Craig M. Whitehouse
J. Fred Banks
Clement Catalano

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,844,237
App. No.
08/791,346
Filed
1997-01-31
Granted
1998-12-01
Kind
A