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:
Apr. 28, 2026
Filed:
Jul. 06, 2022
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Yong K. Wu, Woodbury, MN (US);
Mulugeta D. Dejene, Columbia Heights, MN (US);
Andrew S. D'souza, Shoreview, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C03C 11/00 (2006.01); B32B 15/08 (2006.01); B32B 15/20 (2006.01); B32B 27/20 (2006.01); C03C 25/1095 (2018.01); C03C 25/47 (2018.01); C08J 5/18 (2006.01); C08J 5/24 (2006.01); C08K 7/28 (2006.01); H05K 1/03 (2006.01);
U.S. Cl.
CPC ...
C03C 11/002 (2013.01); B32B 15/08 (2013.01); B32B 15/20 (2013.01); B32B 27/205 (2013.01); C03C 25/1095 (2013.01); C03C 25/47 (2018.01); C08J 5/18 (2013.01); C08J 5/244 (2021.05); C08J 5/249 (2021.05); C08K 7/28 (2013.01); H05K 1/032 (2013.01); B32B 2264/101 (2013.01); B32B 2264/2032 (2020.08); B32B 2264/303 (2020.08); B32B 2307/204 (2013.01); B32B 2457/08 (2013.01); C08K 2201/005 (2013.01); H05K 2201/0129 (2013.01);
Abstract
A plurality of glass bubbles having, in combination, a D50 size of no greater than 13 micrometers, an average true density of no greater than 0.42 grams per cubic centimeter, and a 90% crush strength of at least 55 megapascals are described. Methods of making such glass bubbles and compositions and articles such as sheet molding compounds and dielectric layers prepared from such glass bubbles are also described.