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:
Jul. 16, 1991
Filed:
May. 16, 1990
Richard L Columbus, Rochester, NY (US);
Susan M Atwood, Newark, NY (US);
Deborah P Freyler, Rochester, NY (US);
Harvey J Palmer, Lima, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A method of use is disclosed of a device that causes phase separation of whole blood, using much lower centrifugal forces. As a result, leukocytes are separated from blood cells having specific gravities of 1.09 g/ml or higher. The method preferably uses a separation chamber arranged so that its long dimension or axis is parallel, not perpendicular, to the spin axis, and a valve that allows automatic removal of the ligher phase(s). In one aspect, the method separates a lighter phase from a heavier phase, for example, lymphocytes from whole blood, using a centrifugal force of reduced amount. In another aspect, DNA is extracted readily from the separated lighter phase since it is less likely that the lighter phase will be contaminated by erythrocytes as occurs in conventional separation techniques.