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. 04, 1989
Filed:
Dec. 21, 1987
Tsutomu Kobayashi, Tokyo, JP;
Kiichiro Otsuka, Tokyo, JP;
Eiji Kubota, Tokyo, JP;
Tatsuji Kobayashi, Tokyo, JP;
JEOL Ltd., Tokyo, JP;
Abstract
An ion source for use in a mass spectrometer comprises a porous member arranged in the ionization chamber and bearing against the inlet tube so as to obstruct the open end of the inlet tube. A particle beam is directed to the effluent which exudes from the surface of the porous member after passing through the porous member. A cover shields a portion of the surface of the porous member from the particle beam so as only the most recently exuded effluent is irradiated. The effluent supplied into the porous member by the inlet tube is allowed to exude from surfaces of the porous member other than the surface bombarded with the particle beam so as to carry away stale effluents.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile