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. 26, 1978
Filed:
Jan. 12, 1978
John J Biermacher, Kalamazoo, MI (US);
The Upjohn Company, Kalamazoo, MI (US);
Abstract
A high pressure liquid chromatography apparatus having a detachable inline filter connected between the sample injection valve and the liquid chromatography column. The inline filter removes solid impurities from the liquid stream comprised of mobile phase and sample that is fed into the liquid chromatography column. If the inline filter becomes plugged, it can be detached from the sample injection valve and the liquid chromatography column and then cleaned by backwashing. The inline filter has a low dead volume and good filtration geometry so that the sharpness of the peaks of the chromatogram are not adversely affected to a significant degree by the use of the inline filter.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile