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:
Oct. 31, 2023
Filed:
Dec. 09, 2016
Applicant:
Dynamic Ear Company B.v., Delft, NL;
Inventors:
Pieter Gerard Van 'T Hof, Delft, NL;
Engbert Wilmink, Delft, NL;
Assignee:
SONOVA AG, Staefa, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 45/34 (2006.01); G10K 11/162 (2006.01); A61F 11/08 (2006.01); B29C 45/00 (2006.01); B29C 45/26 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
G10K 11/162 (2013.01); A61F 11/08 (2013.01); B29C 45/0046 (2013.01); B29C 45/263 (2013.01); B29C 45/34 (2013.01); A61F 11/085 (2022.01); A61F 2240/001 (2013.01); B29K 2995/0002 (2013.01); B29K 2995/0093 (2013.01); B29L 2031/768 (2013.01);
Abstract
An injection moulded acoustic filter comprising a foil piece or filter structure having a plurality of micro-slits configured to act as acoustic channels through the foil piece for filtering sound waves impinging the foil piece. The micro-slits have a maximum slit width across a surface of the foil piece of less than one hundred micrometres and a combined slit length along the surface of the foil piece of at least five millimetres. An earplug comprising the acoustic filter. A method and mould for manufacturing the acoustic filter.