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:
Dec. 25, 1990
Filed:
Sep. 11, 1987
Franz Jansen, Castries, FR;
Pierre Gros, Montpellier, FR;
Sanofi, Paris, FR;
Abstract
Immunotoxins formed by the covalent coupling of, on the one hand, the A chain of ricin, as such or correctly modified, with, on the other hand, an antibody or a fragment of an antibody, used in its natural form or correctly modified, which possesses the capacity to selectively recognize an antigen carried by the intended target cells. The coupling is effected either via a disulfide bond or via a thioether bond, with the limitation that, when the coupling is effected via a disulfide and one of the sulfur atoms is that belonging to the A chain of ricin, the other sulfur is bonded to the antibody by a spacing structure which is itself bonded to a group of the protein other than an amine group.