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. 18, 1990
Filed:
Jan. 11, 1990
Applicant:
Inventors:
Andre Nohl, Sunnyvale, CA (US);
Landy B White, Sunol, CA (US);
Assignee:
Spectra-Physics, Inc., San Jose, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
7386484 ; 7386372 ; 436180 ;
Abstract
A pushloop liquid sampling method is an improvement in the method of introducing liquid samples into test equipment (such as for liquid chromotography) via a six port valve. The method involves pulling the sample completely past the sample loop in the six port valve and then pushing the desired amount of sample back into the sample loop.
Nohl, Andre. (1990). Pushloop liquid sampling method (U.S. Patent No. 4957009). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4957009
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile