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:
Nov. 25, 1980
Filed:
Jun. 27, 1979
Applicant:
Inventors:
Lucien E Bourson, Bois Colombes, FR;
Serge Y Delavarenne, Francheville le Haut, FR;
Pierre Tellier, Sainte-Foy-les-Lyon, FR;
Assignee:
Produits Chimiques Ugine Kuhlmann, Courbevoie, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21C / ; D21C / ; C07C / ;
U.S. Cl.
CPC ...
162 72 ; 260369 ; 162 82 ; 162 90 ; 260365 ;
Abstract
A new industrial product, namely 1,2,3,4,4a,9a-hexahydro-9,10-anthracene-dione, is disclosed together with a process for its preparation and its use in conventional alkali metal hydroxide cook or Kraft cook processes for the delignification of lignocellulose materials.