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:
Jan. 29, 1980
Filed:
Nov. 06, 1978
Applicant:
Inventor:
Hansueli Buser, Arlesheim, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
7342 / ;
Abstract
A sample introduction system for a gas chromatograph having a chamber, a lock and a sample holder for introducing a sample via the lock into the chamber which has a needle for piercing the sample to allow a carrier gas introduced into the chamber access to the sample. The sample holder is hollow and has at that end remote from the end which holds the sample and communicating therewith, a pressure control valve so that a rise in pressure can be avoided as the sample is introduced into the lock and then the chamber.