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:
Feb. 19, 1980
Filed:
May. 03, 1977
Applicant:
Inventor:
Donald J Greenspan, Riverside, NJ (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210136 ; 210359 ; 210518 ; 210D / ;
Abstract
A separator tube for insertion into a collection tube comprises a tubular member having one end closed by a plug. The plug comprises a valve seating portion having a valve opening therein and a valve head adapted to seat on the seating portion and bias means extending between the seating portion and the valve head to bias the head to the seated position on the seating portion when the separator tube is stationary within the collection tube.
Greenspan, Donald. (1980). Method and apparatus for separating serum or plasma from the formed (U.S. Patent No. 4189385). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4189385
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile