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. 11, 2008
Filed:
Oct. 18, 2004
Applicant:
Ufuk Senturk, Bridgeport, PA (US);
Inventor:
Ufuk Senturk, Bridgeport, PA (US);
Assignee:
Potters Industries Inc., Valley Forge, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
Glass microspheres containing a substantial percentage of spheres having two or more optically visible gas bubbles per sphere provide a high level of whitening to composite materials containing them. The volume of gas bubbles is between 8 and 35 percent of the volume of the spheres on average, and the spheres exhibit good resistance to breakage upon exposure to high pressures such as may be encountered in polymer extrusion processes. The spheres have a median particle diameter of between 5 and 100 μm, and at least 10% by number of the spheres incorporate at least two gas bubbles.