Patents for September 2026

ArticlesPatents

Patents for September 2026

September 17, 2026

RubberWorld

2026, September

Patents for September 2026 as compiled by our editors from the USPTO.

Golf ball

U.S. patent: 12,616,878

Issued: May 5, 2026

Inventors: Takumi Kaneko, Hikaru Nagakura, Takehiko Hyodo, Kazuyoshi Shiga, Yuko Kujirai and Hiroaki Tanaka

Assigned: Sumitomo Rubber Industries

Key statement: An object of the present disclosure is to provide a golf ball having lowered resilience while maintaining the hardness of the golf ball. The present disclosure provides a golf ball comprising a constituent member, wherein at least a part of the constituent member is formed from a cured product of a rubber composition containing (a) a base rubber, (b) a co-crosslinking agent and (c) a crosslinking initiator, (a) the base rubber contains (a1) a natural rubber and a grafting ratio of (b) the co-crosslinking agent in the cured product of the rubber composition ranges from 40 mass % to 80 mass %.

Sulfur containing unsaturated hydrocarbon polymer and method for production thereof, additive for rubber, rubber composition and tire

U.S. patent: 12,617,878

Issued: May 5, 2026

Inventors: Keisuke Chino, Yusuke Matsuo and Makoto Ashiura

Assigned: Eneos Materials

Key statement: Provided is a sulfur containing unsaturated hydrocarbon polymer which can improve wet grip performance and fuel efficiency of a tire in a well balanced manner by being blended into a rubber composition for a tire. A sulfur containing unsaturated hydrocarbon polymer of the present invention is a reaction product obtained by reacting sulfur with an unsaturated bond in a polymer of an unsaturated hydrocarbon.

Pneumatic vehicle tire having a reinforcing layer with steel monofilaments

U.S. patent: 12,623,491

Issued: May 12, 2026

Inventors: Daniel De Castro Pinho, Mihail Catana, Thomas Kramer and Michael Schunack

Assigned: Continental

Key statement: A pneumatic vehicle tire having a strength member ply comprising steel monofilaments having a cross-sectional area of 98 mm2 to 125 mm2 per meter of strength member ply, the steel has a carbon content of at least 0.86% by weight. To improve rolling resistance the monofilaments have a brass coating having a copper content of 61% by weight to 70% by weight and a zinc content of 30% by weight to 39% by weight, in that the monofilaments have a linear density of 92 g/100 m to 105 g/100 m and the monofilaments each have a tensile density Td of 34 MPa/(g/100 m) to 39 MPa/(g/100 m). The strength member ply has an areal strength AS of 109 Nmm2 to 166 Nmm2 and the rubber material has a breaking elongation of 300% to 450%.

System and method for generating tire rubber asphalt

U.S. patent: 12,624,210

Issued: May 12, 2026

Inventors: Joseph Randall Bruns and Hashem Hashemi

Assigned: Asphalt Sciences

Key statement: A method and system for generating a rapid digestion process (“RDP”) product are described. The method includes receiving a bitumen compound and first heating the bitumen com

*Source: Rubber World. For reference only.