Abstract: A microchannel heat sink is manufactured from graphite materials. A heat sink member has at least a first thermal contact surface for making thermal contact with an electronic device. The heat sink member is constructed of at least a first sheet of compressed particles of exfoliated graphite, the first sheet having two major surfaces. At least one of the major surfaces has a first plurality of microchannels formed therein for carrying coolant fluid. Said microchannels each have a length parallel to one of said major surfaces and have a cross section normal to said length. The cross-section has at least one dimension below about 1000 microns.

Abstract: Constructions for and methods of manufacturing graphite heat spreaders having thermal vias placed therethrough are provided. Thermal vias having one or two flanges are disclosed, as are flush thermal vias. Graphite heat spreaders having surface layers covering the graphite material are provided. Graphite heat spreaders having a layer of cladding for increased structural integrity are provided. Also disclosed are methods of co-forging a graphite heat spreader element with a metal thermal via in place therein.

Abstract: A graphite heat spreader is provided for use with a flash LED light source for a camera of a handheld device such as a cell phone. Dramatically reduced operating temperatures are provided at substantially increased power levels thus providing both improved lighting and improved operating life of the electronic components.

Abstract: A laminate comprising at least one layer of graphite and at least one layer of a dielectric material, wherein the graphite has an in-plane thermal conductivity of at least about 300 W/m° K, suitable for uses such as printed circuit boards.

Abstract: A process for preparing a gas permeable flexible graphite sheet is presented. The process includes providing graphite flakes; admixing the graphite flakes with a sacrificial additive to form a graphite mixture; compressing the graphite mixture into a sheet having sacrificial additive dispersed therethrough; and treating the sheet to at least partially remove the sacrificial additive to form a permeable flexible graphite sheet.

Abstract: A method for improving the adhesion of a functional coating to an article formed of compressed particles of exfoliated graphite, which includes applying a primer coating to the article, where the primer coating has as its constituents at least some of the constituents of the functional coating and exhibits greater adhesion to the article than does the functional coating.

Abstract: A method of forming impressions in a flexible graphite sheet is provided. More particularly, the inventive method involves contacting a flexible graphite sheet with an forming element capable of oscillating against the flexible graphite sheet, whereby the oscillations in the element are such that a plurality of impressions are formed in the flexible graphite sheet.