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:
Jun. 14, 1994
Filed:
Oct. 04, 1993
Applicant:
Inventor:
Garry R Harper, Raleigh, NC (US);
Assignee:
Becton, Dickinson and Company, , NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; G01N / ;
U.S. Cl.
CPC ...
422102 ; 422 73 ; 422101 ; 436 69 ; 428407 ; 428509 ; 604416 ;
Abstract
An additive for a blood collection container is a polyelectrolyte complex having a surface charge which activates clotting of a blood sample in the container. A preferred additive is a crosslinked carboxylated cellulose having a negative charge. The invention includes a blood collection tube having a puncturable stopper in an open end and the additive of the invention deployed therein.