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:
Jun. 02, 2020
Filed:
Dec. 22, 2016
3m Innovative Properties Company, St. Paul, MN (US);
Fabian Stolzenburg, Woodbury, MN (US);
Qin Lin, Woodbury, MN (US);
Noah O. Shanti, Maplewood, MN (US);
Marc D. Radcliffe, Newport, MN (US);
Ronald W. Gerdes, St. Paul, MN (US);
3M INNOVATIVE PROPERTIES COMPNAY, St. Paul, MN (US);
Abstract
Articles and methods of making and using the articles are provided. The articles include inorganic agglomerates having an average dimension in a range from about 50 microns to about 2 mm. The porous agglomerates each include a network of carbon or silica, and metal oxide particles embedded in the network. Some agglomerates are capable of lowering a resonant frequency of an acoustic device when the resonant frequency is in a range from about 50 Hz to about 1500 Hz.