Patents for February 2025
Patents as compiled by the editors of Rubber World Magazine for February.
Polyolefin Elastomer in Multi-Packaging Carrier
U.S. Patent: 12,031,018
Issued: July 9, 2024
Inventors: Christopher J. Samaras, Rachell L. Slovik, and Patrick R. Van Tholen
Assigned: Illinois Tool Works
Key Statement: A flexible carrier for carrying multiple containers, such as soft drink and other beverage containers, is formed from a polymer composition that provides improved elastic recovery, tensile strength, and tear resistance. The composition includes 10% to 95% postconsumer recycled plastic, 0% to 90% branched low-density polyethylene, and up to 65% elastomeric ethylene copolymer.
Rubber Protective Wax, Preparation Method, and Application Thereof
U.S. Patent: 12,031,037
Issued: July 9, 2024
Inventors: Hao Wang, Yang Gao, and Yousheng He
Assigned: Sennics
Key Statement: A rubber protective wax comprising hydrocarbon compounds, polyethylene wax, and an antidegradant. It provides good thermal oxidative aging resistance, static and dynamic ozone aging resistance, flex cracking resistance, and tensile fatigue resistance.
Tread Rubber Composition and Pneumatic Tire
U.S. Patent: 12,031,039
Issued: July 9, 2024
Inventor: Masako Nakatani
Assigned: Sumitomo Rubber
Key Statement: Tread rubber compositions and pneumatic tires with excellent fuel economy, handling stability, and abrasion resistance. The compositions satisfy the relationship: M200 × E*/tan δ ≥ 400.
Systems, Methods, and Computer Program Products for Detecting Reduced Tire Pressure
U.S. Patent: 12,030,348
Issued: July 9, 2024
Inventor: Mats Widmark
Assigned: Nira Dynamics AB
Key Statement: Systems, methods, and computer program products for detecting tire pressure loss using a sensor that detects tilting spatial movement of the chassis and a processing unit that interprets these signals to detect tire pressure loss.
Rubber Composition with Reduced Odor and Good Thermal Oxidative Aging Resistant and Anti-Fatigue Properties
U.S. Patent: 12,031,036
Issued: July 9, 2024
Inventors: Yang Gao, Jin Zhang, and Zhimin Tang
Assigned: Sennics
Key Statement: A rubber composition with reduced odor and good thermal oxidative aging resistance and tension fatigue resistance. It includes a diene elastomer, reinforcing filler, antidegradant composition, and crosslinker, with a specific combination of 6PPD and S-TMQ to reduce VOC emissions and improve properties.
Tire Including a Pattern Forming Area with a Unit Pattern
U.S. Patent: 12,036,822
Issued: July 16, 2024
Inventor: Hee Sung Jang
Assigned: Hankook Tire & Technology
Key Statement: A tire with a pattern forming area on the sidewall, displaying a pattern of predetermined shape formed by hexagon-shaped unit patterns.
Tread Rubber Composition and Pneumatic Tire
U.S. Patent: 12,031,038
Issued: July 9, 2024
Inventor: Hiroshi Ito
Assigned: Sumitomo Rubber Industries
Key Statement: A tread rubber composition and pneumatic tire with excellent wet grip performance when thermally damaged. The composition satisfies specific acetone extractable content relationships.
Rubber Composition Comprising a Block Copolymer
U.S. Patent: 12,037,437
Issued: July 16, 2024
Inventors: Marc Weydert, Alexander Shaplov, Abdullah Gunaydin, and Clément Mugemana
Assigned: Goodyear Tire & Rubber and Luxembourg Institute of Science and Technology
Key Statement: A rubber composition comprising an elastomer, filler, and block copolymer with an elastomer block and a thermoplastic block containing a poly alkylacrylate with a polycyclic substituent.
Process for Forming Rubber Latex from Branched Polymers
U.S. Patent: 12,037,485
Issued: July 16, 2024
Inventors: Adrie Van Der Huizen, Henk Van De Weg, Wouter De Jong, and Maarten Tromp
Assigned: Cariflex PTE
Key Statement: Rubber latex formed from branched block copolymers and branched polyisoprene homopolymers, obtained by polymerization with an anionic initiator and coupling with a multifunctional coupling agent.
Propylene Based Polymer Additives for Improved Tire Tread Performance
U.S. Patent: 12,037,425
Issued: July 16, 2024
Inventors: Edward J. Blok, Anthony J. Dias, Gabor Kiss, and Paul T.Q. Nguyen
Assigned: ExxonMobil Engineering & Technology
Key Statement: An elastomeric composition including polybutadiene, styrene/butadiene copolymer, processing oil, filler, curative agent, antioxidant, silane coupling agent, and propylene-ethylene-diene terpolymer.