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. 17, 1981
Filed:
Oct. 26, 1979
Nordisk Insulinlaboratorium, Gentofte, DK;
Abstract
An antihemophilic factor preparation (AHF) of high solubility and long half-life is produced in high yields by complete or partial thawing of deep-frozen human blood plasma by irradiation with electromagnetic waves of a frequency of about 10.sup.8 -10.sup.15 for a period of time and with an energy penetration such that the temperature in the thawed plasma does not exceed 10.degree. C. at any point, and processing in a manner known per se by centrifuging the thawed product to form a cryoprecipitate, redissolving the cryoprecipitate in a buffer and isolating a concentrated solution which, if desired, is freeze-dried. Irradiation is preferably effected by microwaves of a frequency of 10.sup.8 -3.times.10.sup.11 Hz, in particular 2.times.10.sup.9 -3.times.10.sup.10 Hz, or by infrared light, said frozen plasma being preheated if desired. The preparation is suitable for injection performed by the patient himself without medical assistance.