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:
Jan. 26, 2016
Filed:
Sep. 12, 2008
Louis A. Mango, Iii, Trafalgar, IN (US);
Ryszard A. Pilatowski, Palos Hills, IL (US);
John F. Steere, Martinsville, IN (US);
John S. Stewart, Bloomington, IN (US);
Louis A. Mango, III, Trafalgar, IN (US);
Ryszard A. Pilatowski, Palos Hills, IL (US);
John F. Steere, Martinsville, IN (US);
John S. Stewart, Bloomington, IN (US);
Harman International Industries, Incorporated, Northridge, CA (US);
Abstract
A loudspeaker cone body made of paper may include a chemically-bound nanomaterial, such as a carbon nanotube. The carbon nanotube may be chemically bound to a functionalizing agent having a chemical group chemically bound to one or more papermaking additives, such as a sizing agent or a wet strength agent, a dry strength agent, a resin or cellulose-containing papermaking stock material typically present in a paper loudspeaker cone body, such as pulp. Acoustic-related loudspeaker performance characteristics such as stiffness to weight ratio and an acoustic damping of the loudspeaker cone body may be altered by incorporation of the nanomaterials chemically bound to the loudspeaker cone body.