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:
May. 06, 2014
Filed:
Feb. 21, 2008
William Brewer, Columbia, SC (US);
William Brewer, Columbia, SC (US);
Other;
Abstract
The present invention is a pipette tip device for extraction of liquid, semi-solid or solid solutions to be chemically analyzed and the methods for their use. The pipette tip extraction device contains a screen or filter at its lower narrow end to contain solid particulate matter and a barrier at its upper wide end. The optional upper frit is to be made of material that permits liquid solutions to flow through it. In addition to the barrier and screen, the pipette tip extraction device may contain solid-phase sorbent. Through the use of a removable cap, the pipette extraction tip may also serve as a sample collection container or tip in which samples can be delivered to the top of the tip (e.g., for direct collection of samples, including solid samples). A new method for DPX extraction using liquid-liquid-solid-phase extraction is also disclosed.