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:
Sep. 14, 2021
Filed:
Sep. 07, 2018
GM Global Technology Operations Llc, Detroit, MI (US);
Seongchan Pack, West Bloomfield, MI (US);
Su Jung Han, West Bloomfield, MI (US);
Martin S. Kramer, Davisburg, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A composite article configured for mitigating noise, vibration, and harshness includes a substrate having a first stiffness. The composite article includes a structural film formed from a composition and disposed on the substrate in a pattern that is arranged to dampen a sound wave having a first frequency and a first amplitude and propagatable in a first direction to a second frequency that is less than the first frequency and a second amplitude that is less than the first amplitude. The composite article includes a coating layer disposed on the pattern and configured to dampen the sound wave in the first direction and in a second direction that is perpendicular to the first direction. The composite article has a second stiffness that is greater than the first stiffness. A method of forming the composite article is also described.