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:
Mar. 08, 2011
Filed:
Aug. 14, 2008
Applicant:
Warren R. Beck, Woodbury, MN (US);
Inventor:
Warren R. Beck, Woodbury, MN (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 5/16 (2006.01); C03B 19/08 (2006.01); C03B 19/10 (2006.01); C03B 19/14 (2006.01); C03C 12/00 (2006.01); C04B 38/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
Hollow glass microspheres are made using selenium oxide as the blowing agent. The use of selenium oxide provides two unique advantages: lower density and smaller hollow microspheres are obtained because loss of selenium oxide gas out of the liquid glass bubble during formation is slow, and the hollow microspheres will contain a vacuum due to the condensation of selenium oxide gas blowing agent upon cooling of the spheres below 315 deg. C.