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:
Sep. 13, 1983
Filed:
Dec. 30, 1980
Applicant:
Inventors:
Giorgio Sisti, Melzo, IT;
Bruno Tosi, Carate Brianza, IT;
Sorin Trestianu, Brussels, BE;
Mario Galli, Legnano, IT;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
7386481 ; 73 231 ; 7386473 ;
Abstract
An apparatus for controlling the injection passage of on-column injector is disclosed. The apparatus includes a valve having at least one channel inside it and leading to the injection passage for the injection syringe needle. The channel is connected outside the injector to a source for carrier gas introduction, when the valve is open, or to the atmosphere, when the valve is closed, so as to allow a quick-type injection without the drawbacks of this injection type, as well as to have a solvent exhaust after injection.