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:
Dec. 04, 1990
Filed:
Mar. 17, 1988
Applicant:
Inventors:
Donald B Rising, Stow, MA (US);
Emile O Montminy, Lowell, MA (US);
Assignee:
Millipore Corporation, Bedford, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73864041 ;
Abstract
A filter punch construction is provided for use in conjunction with a multiwell filtration device wherein each well includes a filtration membrane. The punch has a leading flat surface to which is secured an elongated piercing member having a sharp point and a following surface to which is secured a guide member. The piercing member pierces the filtration membrane in each well and the flat leading surface pushes the entire membrane and retentate thereon into a receptacle vial.