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, 2015
Filed:
Feb. 05, 2007
Applicant:
Hongji Liu, Grafton, MA (US);
Inventor:
Hongji Liu, Grafton, MA (US);
Assignee:
Waters Technologies Corporation, Milford, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 30/34 (2006.01);
U.S. Cl.
CPC ...
G01N 30/34 (2013.01); G01N 2030/347 (2013.01);
Abstract
Embodiments of the present invention feature methods and apparatus for performing chromatographic separations. The invention feature methods and control means in the form of computer programs and software that control the formation of a concentration gradient at two or more total flow rates, with an elution period occurring in a slow flow rate and at least other portions of the gradient occurring during a fast total flow rate.
Liu, Hongji. (2015). Methods and apparatus for generating solvent gradients in liquid chromatography (U.S. Patent No. 8992778). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8992778
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile