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:
Mar. 31, 1981
Filed:
May. 16, 1979
Applicant:
Inventors:
Curt Brunnee, 2820 Platjenwerbe, DE;
Jochen Franzen, 2878 Wildenhausen, DE;
Stefan Meier, 2800 Bremen, DE;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; B01D / ;
U.S. Cl.
CPC ...
250281 ; 250288 ; 2504 / ; 2504 / ;
Abstract
Organic samples from a liquid chromatograph are deposited on a conveyor belt which transports them into a vacuum chamber at the entry end of a mass spectrometer. The samples are ionized directly on the belt by particle bombardment or by means of a laser beam. Ionization is enhanced by applying an oxide layer to the belt, by neutralizing the image force, and by vaporizing alkali atoms on the belt to reduce the ionization potential.