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:
Mar. 17, 1987
Filed:
Mar. 14, 1985
Jean-Marie Piot, Villeneuve d'Ascq, FR;
Didier Guillochon, Villeneuve d'Ascq, FR;
Pierre Charet, Marcq en Baroeul, FR;
Daniel Thomas, Villeres sur Coudun, FR;
Centre National de la Recherche Scientifique CNRS, Paris, FR;
Universite des Sciences et Techniques (Lille I), Cedex, FR;
Abstract
Blood products and other substances colored by tetrapyrrole compounds such as porphyrins or metalloporphyrins, in an aqueous solution, are decolored by contacting the aqueous solution with an adsorbent selected from among alumina, magnesia, and magnesium silicate, and the resulting colorless solution is then collected. The solution to be decolored can be adjusted to a pH of 2 to 6, and can be at a temperature in the range of 0.degree. to 60.degree. C., but is usually decolored at ambient temperature.