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:
May. 10, 2022
Filed:
May. 19, 2020
Global Graphene Group, Inc., Dayton, OH (US);
Aruna Zhamu, Springboro, OH (US);
Yanbo Wang, Miamisburg, OH (US);
Bor Z. Jang, Centerville, OH (US);
Global Graphene Group, Inc., Dayton, OH (US);
Abstract
Provided is a laminated graphitic layer as an elastic heat spreader, the layer comprising: (A) a plurality of graphitic or graphene films prepared from (i) graphitization of a polymer film or pitch film, (ii) aggregation or bonding of graphene sheets, or (iii) a combination of (i) and (ii), wherein the graphitic or graphene film has a thermal conductivity of at least 200 W/mK, an electrical conductivity no less than 3,000 S/cm, and a physical density from 1.5 to 2.25 g/cm; and (B) a conducting polymer network adhesive that bonds together the graphitic or graphene films to form the laminated graphitic layer; wherein the conductive polymer network adhesive is in an amount from 0.001% to 30% by weight and wherein the laminated graphitic layer preferably has a fully recoverable tensile elastic strain from 1% to 50% and an in-plane thermal conductivity from 100 W/mK to 1,750 W/mK.