Patents for November
November patents as compiled by the editors of Rubber World Magazine from the USPTO.
Tire comprising a dual layer tread
U.S. patent: 12,285,976
Issued: April 29, 2025
Inventors: Christian Jean-Marie Kaes, Steve Ludwig, Anna Katharina Bier; Terence Barrett, Bjoern Springer, Richard Cox and Kimia Ekramzadeh
Assigned: Goodyear Tire & Rubber
Key statement: The present invention relates to pneumatic tires comprising a dual-layer tread made of a first layer comprising a first tread compound having a first tread property and a second layer comprising a second tread compound having a second tread property.
Aqueous silicone elastomers as anti-graffiti coatings
U.S. patent: 12,286,557
Issued: April 29, 2025
Inventor: Timothy Krytenberg
Assigned: Industrial Control Development
Key statement: A method that includes coating a liquid aqueous silicone elastomer-containing composition onto an architectural surface, a signage surface, a built landscape surface or a commercial super structure surface and then drying the liquid aqueous silicone elastomer-containing composition resulting in forming a silicone elastomer-containing anti-graffiti coating on the architectural surface, the signage surface, the built landscape surface or the commercial super structure surface.
Shapewear having rubber elastic fabric
U.S. patent: 12,285,056
Issued: April 29, 2025
Inventor: Zhennan Xu
Assigned: Xiamen Hexin Technology
Key statement: The present invention relates to a shapewear having a rubber elastic fabric. The shapewear has a one-piece garment structure or a waist-shaping trousers structure, with more than one shaping portion. The shapewear includes a shell fabric and a lining fabric; the lining fabric is stitched and connected to an inside of the shell fabric; and the shaping portions are each disposed on the lining fabric. The rubber elastic fabric has the thickness of 0.3 mm 0.6 mm, with an elastic base fabric firmly binding to rubber to achieve durability and undeformability without binding failure after machine washing; and the rubber elastic fabric has a soft hand feel and can be in direct contact with the skin; and meanwhile, the feel of heaviness can be reduced to achieve an ultralight and ultrathin feel. Furthermore, air vents are provided in the rubber fabric to ensure breathability and comfort.
Tire with tread containing vegetable oil extended high Tg styrene/butadiene elastomer and traction resin
U.S. patent: 12,286,529
Issued: April 29, 2025
Inventors: Michael Lawrence Gersman, Nihat Ali Isitman and Philip Jordan Young
Assigned: Goodyear Tire & Rubber
Key statement: This invention relates to a tire with high performance tread of rubber composition for promoting tread durability and traction. For such purpose, a tread rubber composition is provided which contains a high Tg solvent solution polymerization prepared styrene/butadiene elastomer (SSBR) together with precipitated silica reinforcement and traction resin. The invention includes extension of the uncured high Tg SSBR by triglyceride vegetable oil instead of petroleum based oil.
Thermally conductive silicone rubber sheet comprising a thermally conductive adhesive layer
U.S. patent: 12,286,568
Issued: April 29, 2025
Inventors: Takanori Ito and Akihiro Endo
Assigned: Shin-Etsu Chemical
Key statement: One of the purposes of the present invention is to provide a composite heat-release sheet which is excellent in thermal conductivity and electrical insulation property and, at the same time, has all of sufficient adhesion to an actual machine, low thermal resistance, reworkability and reliable adhesive strength. Another purpose is to provide a more convenient production process for the heat-release sheet. A thermally conductive silicone rubber sheet comprising at least one thermally conductive silicone rubber layer having a type A durometer hardness of 60 to 96 and at least one silicone adhesive layer, wherein the silicone adhesive layer is a cured product of an addition curable or peroxide curable silicone adhesive composition comprising (a) organopolysiloxane having at least one alkenyl group bonded to a silicon atom and having a phenyl group bonded to a silicon atom in such an amount that the percentage of the number of the phenyl group is 2% to 20%, based on the total number of substituents each bonded to a silicon atom, (c) thermally conductive filler having an average particle diameter of less than 10 μm and containing 0 to 3 mass % of particles having a particle diameter of 20 μm or more and 0 to 0.01 mass % of particles having a particle diameter of 40 μm or more and (f) silicone resin comprising an R3SiO1/2 unit and an SiO4/2 unit.
Butyl rubber based pressure sensitive adhesives
U.S. patent: 12,286,563
Issued: April 29, 2025
Inventors: Henry W. Milliman, Marcela Castano and Dong-Tsai Hseih
Assigned: Avery Dennison
Key statement: Provided herein are butyl rubber based pressure sensitive adhesive compositions comprising low molecular weight polyisobutylene oligomers and a multifunctional crosslinker. These adhesive compositions can exhibit high adhesion and shear resistance without requiring curing at high temperature to provide the compositions with these advantageous performance properties. Also provided are adhesive tapes and methods using the disclosed adhesive compositions.
Reclaiming agent and reclaimed rubber
U.S. patent: 12,291,631
Issued: May 6, 2025
Inventors: Yi-Ting Wei, Jyh-Horng Wu, Yao-Zu Wu, Ming-Tsong Leu and You-Shan Cai
Assigned: Industrial Technology Research Institute
Key statement: A reclaiming agent is formed by grafting thiol groups onto styrene butadiene rubber (SBR). The reclaiming agent has a weight average molecular weight of 1,000 to 120,000, which can be a random copolymer or a block copolymer. One hundred parts by weight of styrene butadiene rubber can be reacted with 0.1 to 50 parts by weight of the reclaiming agent to form a reclaimed rubber.
Rubber composition based on at least one functionalized elastomer comprising polar functional groups and a specific phenolic compound
U.S. patent: 12,291,626
Issued: May 6, 2025
Inventors: Odile Gavard-Lonchay and Anne-Lise Thuilliez
Assigned: Michelin
Key statement: The invention relates to a rubber composition based on at least one functionalized elastomer comprising polar functional groups, a reinforcing filler and a specific phenolic compound.
Nonpneumatic tire
U.S. patent: 12,296,630
Issued: May 13, 2025
Inventors: Claire Shand, Joseph Skibo, Jr., Frank Johnson and Daniel Davis
Assigned: American Kenda Rubber Industrial
Key statement: A nonpneumatic tire (NPT) having an inner ring for receiving a hub by which the nonpneumatic tire is affixed to a vehicle or other apparatus, an outer ring encircled by a tread band and a plurality of revolved and mirrored spokes that extend between the inner ring and the outer ring to form an interconnected web of collapsible open cells. Each of the spokes includes multiple segments, with at least some of the segments having a concave bias when in an unloaded state. The design and arrangement of the spokes results in a nondirectional web and loads experienced by the NPT are distributed throughout the web in a manner that increases the load carrying capacity of the NPT.