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:
Oct. 11, 1994
Filed:
May. 28, 1993
Applicant:
Inventors:
David J Arthur, Norwood, MA (US);
Gwo S Swei, Northboro, MA (US);
Phong X Nguyen, New Britain, CT (US);
Assignee:
Rogers Corporation, Rogers, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; C08K / ;
U.S. Cl.
CPC ...
428325 ; 264211 ; 428331 ; 428402 ; 428405 ; 428406 ; 428421 ; 428422 ; 521 54 ; 523218 ; 523219 ;
Abstract
A composite material is disclosed. The material comprises a polymeric matrix and from about 20 volume percent to about 70 volume percent inorganic particles distributed throughout the matrix. Suitable inorganic particles include hollow inorganic microspheres and porous inorganic particles. The inorganic particles are coated with a surface coating. The composite material of the present invention exhibits a dielectric constant of less than about 2.5 and a thermal coefficient of expansion of less than about 70 ppm/.degree.C.