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The award-winning Phase Change Matters blog tracks the latest news and research on phase change materials and thermal energy storage. E-mail tips and comments to Ben Welter, communications director at Entropy Solutions. Follow the blog on Twitter at @PureTemp. Subscribe to the weekly PCM newsletter. Or join the discussion on LinkedIn.

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Patent application: Temperature-controlling vest for relieving menopause symptoms

Ben Welter - Friday, April 26, 2019

Imanano cooling vest patent drawingU.S. patent application 20190117447 (applicant Imanano Inc., Lewes, Del.):

"The field of the invention relates generally to devices and methods for controlling the temperature of a human or non-human body. More specifically, the field of the invention may relate to wearable devices, which may be worn by a subject, which human or non-human, wherein the wearable device is in thermal communication with a portion of the subject's body containing brown adipose tissue and wherein the wearable device comprises a means for providing a constant or near constant temperature to the subject's body and therefore controls the temperature of the subject's body, by using a phase change material. The phase material transitions state at a predetermined temperature which may be higher or lower than the subject's exterior body temperature. The device and method are usable to control temperature-related effects of menopause, post menopause and drug induced thermoregulatory symptoms such as night sweats, hot flashes and sleep disturbance."

http://www.freepatentsonline.com/20190117447.pdf

Patent application: Building panel system

Ben Welter - Friday, April 19, 2019

U.S. patent application 20190112809 (applicant Armstrong World Industries Inc., Lancaster, Penn.):

"A building panel system is provided. The building panel system include a panel structure having a first surface and a second surface opposite the first surface; a mounting system attached to the panel structure; at least one container detachably coupled to the mounting system at one of a plurality of selectable coupling positions so as to be in conductive thermal cooperation with the first surface of the panel structure; and a phase change material contained within the at least one container."

http://www.freepatentsonline.com/20190112809.pdf

Patent application: Thermal energy storage systems utilizing phase change material

Ben Welter - Friday, April 19, 2019

U.S. patent application 20190101337 (applicant SABIC Global Technologies B.V., Bergen op Zoom, Netherlands):

"A thermal energy storage system utilizes a phase change material with an encapsulating material surrounding the phase change material. The encapsulating material fully contains the phase change material to prevent passage of the phase change material out of the encapsulating material and/or prevent direct contact of the phase change material with external objects. The encapsulating material is a high density polyethylene (HDPE), which may be a non-crosslinked or crosslinked HDPE. In a method of forming a thermal energy storage system a phase change material is surrounded with the encapsulating material."

http://www.freepatentsonline.com/20190101337.pdf

Patent application: Air-conditioning system

Ben Welter - Friday, April 19, 2019

U.S. patent application 20190113259 (applicant Ford Global Technologies LLC, Dearborn, Mich.):

"An air-conditioning system includes first and second PCM vessels, a heat recovery circuit, and a conduit and valve system. The heat recover circuit includes a third PCM vessel. The conduit and valve system operably couples i.) a first heat exchanger to the first PCM vessel and a radiator, ii.) a second heat exchanger to a core and the second PCM vessel, and iii.) the heat recovery circuit to the first heat exchanger."

http://www.freepatentsonline.com/20190113259.pdf

Patent application: Reflective temperature modulating blanket

Ben Welter - Thursday, April 11, 2019

U.S. patent application 20190106878 (inventor Robert Joe Alderman, Poteet, Texas):

"A temperature modulating blanket utilizing a reflective surface to block radiation away from a phase change material [110] during daylight and in thermal conductivity with the material to allow heat conduction out of the material at night at a faster rate than it is absorbed during the daylight. The reflective surface is uniquely tailored to both serve a reflective function during daylight while also being sufficiently thermally conductive to facilitate the heat conduction as indicated during night. Additionally, the facilities may be uniquely configured to promote an attic circulation that further facilitates freezing and recharge of the phase change material of the blanket during night hours."

http://www.freepatentsonline.com/20190106878.pdf

Patent application: Gel comprising a phase change material

Ben Welter - Sunday, March 24, 2019

U.S. patent application 20190085226 (applicant Cold Chain Technologies Inc., Franklin, Mass.):

CCT PCM gel product"Gel including a phase-change material and a gelling agent. In one embodiment, the phase-change material may be n-tetradecane, n-hexadecane or mixtures thereof. The gelling agent may be a high molecular weight styrene-ethylene-butylene-styrene (SEBS) triblock copolymer with a styrene:rubber ratio of about 30:70 to 33:67% by weight. To form the gel, the phase-change material and the gelling agent may be mixed at an elevated temperature relative to room temperature to partially, but not completely, dissolve the gelling agent. The mixture may then be cooled to room temperature. Alternatively, the phase-change material and the gelling agent may be mixed at room temperature, and the mixture may then be heated to form a viscoelastic liquid, which is then cooled to room temperature. The invention is also directed at a method of preparing the gel, a thermal exchange implement including the gel, and a method of preparing the thermal exchange implement."

http://www.freepatentsonline.com/20190085226.pdf

Patent application: Multilayer thermal laminate

Ben Welter - Saturday, March 23, 2019

U.S. patent application 20190089027 (applicant Dell Products L.P., Round Rock, Texas):

"A multilayer thermal laminate with aerogel is used for a battery cell enclosure to improve thermal properties and to reduce thermal inhomogeneity in the form of localized hotspots that exceed a desired rated temperature, thereby enabling a more compact design within rated thermal design limits for a given electrical performance. ... [The third layer of the laminate] serves as a thermal storage medium and may accordingly be comprised of a phase change material, such as a wax. The phase change material may be selected to have a desired melting temperature range, such as between 30 C and 70 C, between 45 C and 65 C, or between 40 C and 60 C, in given implementations, among other possible melting temperature ranges."

http://www.freepatentsonline.com/20190089027.pdf

Patent application: Removable sticker for cooling hot spots in cellular phones

Ben Welter - Saturday, March 23, 2019

U.S. patent application 20190086158 (inventor James Hirschfeld, Delray Beach, Fla.):

"A removable cooling sticker secured to the surface of a cellular telephone for extraction of heat from the cellular telephone. The cooling sticker is thin and sized to be conveniently carried. [Using phase change material as the active heat extraction material,] the cooling sticker is adhered to the cellular telephone at its hot spot for maximum efficiency. An optional feature employs thermal strips that indicate when the electronic device is exceeding a temperature threshold sticker."

http://www.freepatentsonline.com/20190086158.pdf

Patent application: Mobile lab for rapid detection and analysis of biological targets

Ben Welter - Friday, March 15, 2019

U.S. patent application 20190076844 (applicant MRIGlobal, Kansas City, Missouri):

"A mobile field-deployable laboratory to more conveniently enable the detecting, sequencing and analyzing of biological agents at the point-of-need. This device enables field operators to go from sample to actionable information in the field without the need for an internet connection or grid-based power. ... [The] cooling system includes a phase-change cooling system capable of holding a predetermined selected temperature constant for a predetermined time period."

http://www.freepatentsonline.com/20190076844.pdf

Patent application: One-piece insulating container

Ben Welter - Friday, March 15, 2019

U.S. patent application 20190077576 (inventors Drayton G. Miller, Dauphin Island, Ala., and William J. Gunn, Springfield, Ill.):

"A one-piece cushioning and insulating container and insulation template for forming the container are provided. The insulation template includes a case blank and an insulating member secured thereto. The template may be formed into a three-dimensional container that provides cushioning and insulating items contained inside the container by simultaneously folding the case blank and insulating member. The template is designed to provide a completely enclosed space that is cushioned and insulated on all sides. The dimensions of the template may be adjusted to create containers of varying dimensions. The container may be constructed of various materials with a layer of soft, flexible material secured therein. The template may have heating or cooling elements, including phase change materials, incorporated into insulating member."

http://www.freepatentsonline.com/20190077576.pdf