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:
Jul. 18, 1978
Filed:
Jun. 16, 1976
Applicant:
Inventors:
J Gustav Schulz, Pittsburgh, PA (US);
Edward T Sabourin, Allison Park, PA (US);
Assignee:
Gulf Research & Development Company, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521 83 ; 521143 ; 521178 ; 521 95 ; 521101 ; 521128 ;
Abstract
A foamable polymer composition comprising a resinous polymer and a mixture of polycyclic aromatic polycarboxylic acids carrying nuclear nitro groups that is substantially soluble in acetone but substantially insoluble in water obtained as a result of the nitric acid oxidation of a carbonaceous material, such as coal.