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. 23, 1988
Filed:
Oct. 27, 1986
Applicant:
Inventors:
Richard B Allen, Pittsfield, MA (US);
Frederick L Sanford, Pittsfield, MA (US);
Assignee:
General Electric Company, Selkirk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521139 ; 264 53 ; 521 79 ; 521 81 ; 521180 ;
Abstract
Low density particles or beads of polyphenylene ether or polyphenylene ether-polystyrene blends are provided by incorporation of a suitable blowing agent such as pentane into the resin mixture, flowed by expansion of the resin particles by exposure temperatures near the Tg of the blend.