The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 1986
Filed:
May. 15, 1984
Duane P Littlejohn, Madison, WI (US);
Sahba Ghaderi, Madison, WI (US);
Nicolet Instrument Corporation, Madison, WI (US);
Abstract
A mass spectrometer including a vacuum chamber wherein molecular flow conditions are maintained. A sample introduced into the chamber is ionized while a magnetic field through the chamber induces ion cyclotron resonance. Trapping plates are provided for restricting ion movement along the magnetic field while a conductance limit plate divides the chamber into first and second compartments. The conductance limit plate has an orifice configured to allow ion equilibration between the compartments while maintaining a pressure differential between them. The conductance limit plate includes an electrode that is selectively connected to a means for applying trapping potential to selectively trap ions in one of said compartments.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile