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:
Jan. 24, 1995
Filed:
Jun. 22, 1993
Applicant:
Inventors:
Humayun Qureshi, Wayland, MA (US);
Donald Schwartz, Marblehead, MA (US);
Assignee:
DRD Diluter Corp., Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; B01L / ;
U.S. Cl.
CPC ...
7386417 ; 436180 ;
Abstract
A pipette has a first and second piston to provide for a precise dose measurement and delivery, and a second dose which can be an air blowout to fully expel the precise measured first dose. Preferably, two pistons used are of different diameter with a difference in diameters permitting precise measurement of small doses of, for example, 10 microliters or less.