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. 20, 1987
Filed:
Feb. 12, 1986
Peter R Foster, Edinburgh, GB;
National Research Development Corporation, London, GB;
Abstract
Cryoprecipitate for the production of factor VIII is extracted from frozen blood plasma by continuously circulating the plasma in a crushed state between the peripheral and central regions of an externally, steadily heated thawing zone, with thawed mixture of liquor and cryoprecipitate being removed from the lowermost region of the zone by way of a path including a weir configuration. Preferably: the zone is formed by an axially upright cylindrical vessel; circulation is effected by at least one helical blade coaxially rotatable in the vessel, which blade extends over the vessel heights, is radially narrow compared to the vessel, is close to the vessel wall, and scoops material upwardly; the outlet from the vessel is tangentially opposed to the blade rotation; and heating is by way of a liquid jacket with generally axial flow therethrough.