Patents for January 2025
Patent News as compiled by the editors of Rubber World for January 2025.
Pneumatic vehicle tire
U.S. patent: 11,999,203
Issued: June 4, 2024
Inventors: Norbert Kendziorra and Christian Weber
Assigned: Continental Reifen
Key statement: A pneumatic vehicle tire of radial type of construction,
having a tread (1), having a carcass inlay (3), having electrically
nonconductive sidewalls (7) and having at least one electrically conductive
component (8) or element in a bead region, which component or element, in
the case of a tire mounted on a wheel rim, comes into contact with said
wheel rim, wherein either the tread (1) is electrically conductive or, in the
tread region, at least one electrically conductive component (10) is provided
which is overlapped on the outside by the sidewalls (7) and which is
connected in electrically conductive fashion to the tread outer surface and
wherein laments provided with an electrically conductive coating are
incorporated at least in a sidewall region, the coating of which laments
forms electrically conductive passages between the tread (1) or the
component (10) and the at least one electrically conductive component (8)
or element in the bead region.
Rubber composition
U.S. patent: 11,999,854
Issued: June 4, 2024
Inventors: Tenko Hayashi and Christine Nourry
Assigned: Michelin
Key statement: A rubber composition is based on at least an elastomer
matrix, a reinforcing ller comprising a reinforcing inorganic ller and a
plasticizing agent comprising a hydrocarbon resin and a liquid plasticizer
comprising a vegetable oil and a liquid diene polymer bearing at least one
silane function, wherein the amount in phr of hydrocarbon resin is higher
than that of the liquid diene polymer and wherein the amount in phr of
vegetable oil is higher than one-third of the amount in phr of the liquid
diene polymer.
Rubber composition and a tire
U.S. patent: 12,006,436
Issued: June 11, 2024
Inventors: Eric Engeldinger and Manuela Pompei
Assigned: Goodyear Tire & Rubber
Key statement: The present invention is directed to a sulfur vulcanizable
rubber formulation comprising 10 phr to 100 phr of at least one partially
saturated elastomer comprising repeat units, wherein at most 10% of all
repeat units of the elastomer comprise a double bond; 0 phr to 90 phr of at
least one diene based elastomer; 40 phr to 200 phr of at least one ller; and
5 phr to 70 phr of at least one hydrogenated plasticizer. This sulfur
vulcanizable rubber formulation has been found to be useful in
manufacturing tires.
Tire tread and a tire comprising a tread
U.S. patent: 12,005,740
Issued: June 11, 2024
Inventors: Claude Schweitzer, Jean-Louis Marie Felicien Thomas, Bodo
Ahrens, William Alain Francis Ghislain Talbot, Germain Dehez and Hubert
Anna Johanes Cox
Assigned: Goodyear Tire & Rubber
Key statement: In a rst aspect of the present invention, a tire tread is
provided, the tread comprising a tread cap comprising a rst rubber
compound for contacting the road when driving, at least one circumferential
groove reinforcement forming at least one of the grooves in the tread cap,
the groove reinforcement comprising a second rubber compound for
reinforcing an area adjacent the grooves formed by the groove
reinforcement, wherein the groove reinforcement comprises for at least one
of the grooves formed by the groove reinforcement two groove sidewall
layers, each sidewall layer extending from the outer radial surface of the
unworn tread down into the direction of the bottom of the groove formed
by the groove reinforcement and wherein each sidewall layer has an
essentially uniform thickness along its length and wherein the groove
reinforcement comprises a groove support portion forming a bottom
portion of the groove and having a radially inner base side as well as a
radially outer top side, wherein the groove support portion tapers from its
base side to its top side.
Overmolding thermoplastic elastomer compounds having high biobased content
U.S. patent: 12,006,431
Issued: June 11, 2024
Inventor: Liang Xu
Assigned: Avient
Key statement: Thermoplastic elastomer compounds include (a)
hydrogenated styrene-farnesene-styrene block copolymer, (b) thermoplastic
polyester elastomer having a bio-based content of at least about 45%, (c)
polyolen having a bio-based content of at least about 95%, (d) secondary
styrenic block copolymer such as styreneethylene/ butylene-styrene block
copolymer and (e) plasticizer. The thermoplastic elastomer compounds have
a bio-based content of at least about 40%. Additionally, the thermoplastic
elastomer compounds have an adhesion of at least about 10 pli according
to a 90° peel test on at least one of acrylonitrile butadiene styrene,
polycarbonate/ acrylonitrile butadiene styrene and polycarbonate. The
thermoplastic elastomer compounds can be especially useful for making
overmolded thermoplastic articles.
Medical rubber composition, medical rubber part and pre-llable syringe
U.S. patent: 12,006,391
Issued: June 11, 2024
Inventors: Hirofumi Konishi, Toshikazu Kondo, Masayoshi Kashibe and
Hideyuki Shigemoto
Assigned: Sumitomo Rubber Industries
Key statement: A medical rubber composition can contain, comprise, consist
or consist essentially of: (a) an isobutylene-isoprene rubber: (b) a diene
based rubber; and a silica having a BET specic surface area not lower than
130 m2/g. An amount of (a) the isobutylene-isoprene rubber contained in
100 parts by mass of a rubber component composed of (a) the isobutyleneisoprene rubber and (b) the diene based rubber can be larger than 30 parts
by mass and smaller than 55 parts by mass.
Tire mounting state detection system, tire mounting state detection method and tire mounting state detection program
U.S. patent: 12,005,747
Issued: June 11, 2024
Inventor: Kyohei Honda
Assigned: Bridgestone
Key statement: A tire mounting state detection system (100) is provided with
a vehicle conguration holding unit (230) holding a vehicle conguration
including the number of wheels of a vehicle (10); a transmitter number
detection unit (250) detecting the number of transmitters based on a radio
signal received by a receiving unit; a state detection unit (260) detecting
whether or not the number of transmitters exceeds or is short the number
of wheels based on the number of wheels based on the vehicle
conguration and the number of transmitters detected; and an output unit
(270) outputting that the state of the transmitter is abnormal when it is
determined that the number of transmitters exceeds or is short the number
of wheels.
Thermoplastic elastomer composition and automobile weather strip
U.S. patent: 12,012,507
Issued: June 18, 2024
Inventors: Shouhei Sasama, Yuki Sato and Osamu Kose
Assigned: Eneos Materials
Key statement: Provided is a thermoplastic elastomer composition obtained
by melt-kneading an ethylene/α-olen/ non-conjugated polyene copolymer
rubber (A) that is a copolymer of ethylene, an α-olen having 3 to 20 carbon
atoms and a non-conjugated polyene, a polyolen resin (B) and a mineral oil
based softening agent (C) in the presence of an organic peroxide (D) and a
crosslinking aid (E), the thermoplastic elastomer composition having a shear
viscosity of from 5 Pa.s to 20 Pa.s at 140°C and 10,000 s-1.
Block copolymer intrinsic stretchable electroluminescent elastomer and preparation method and application thereof
U.S. patent: 12,012,481
Issued: June 18, 2024
Inventors: Wen-Yong Lai, Wan Song, Xiangchun Li, Yu Yan and Wei Huang
Assigned: Nanjing University of Posts and Telecommunications
Key statement: The invention discloses a block copolymer intrinsic
stretchable electroluminescent elastomer and its preparation method and
application. This type of elastomer is made from organic electroluminescent
monomers, styrene and 1,3-butadiene through anionic polymerization. The
innovation of the present invention is: for the rst time, the organic
electroluminescence unit is introduced into the elastomer by chemical
crosslinking. On the basis of improving the intrinsic stretchability of the
elastomer, at the same time, it has characteristics of excellent luminescence
and high carrier mobility, novel structure and unique design strategy;
meanwhile, it also solves the inherent non-stretchability problem of
traditional organic optoelectronic materials and the problem that traditional
elastomers do not have electroluminescent properties. This type of
elastomer is used as a light-emitting layer material to prepare organic
electroluminescent devices with high stability, high stretchability and high
eciency.
Production method for laminate of uorosilicone rubber and silicone rubber
U.S. patent: 12,011,904
Issued: June 18, 2024
Inventors: Chiichiro Hasegawa and Naoya Ishigami
Assigned: Dow Toray
Key statement: A production method for a laminate of a uorosilicone
rubber and a silicone rubber is provided. The production method comprises
the following steps: (1) curing a uorosilicone rubber composition
comprising: (A) an organopolysiloxane having alkenyl groups and uoroalkyl
groups, (B) an organopolysiloxane having silicon atom-bonded hydrogen
atoms and uoroalkyl groups and (C) a hydrosilylation reaction catalyst; (2)
laminating a silicone rubber composition comprising: (D) an
organopolysiloxane having alkenyl groups and not having uoroalkyl groups
and (E) an organic peroxide on a surface of a uorosilicone rubber produced
in step (1) above; and (3) curing a silicone rubber composition layer in a
laminate produced in step (2) above. A laminate in which a uorosilicone
rubber layer and a silicone rubber layer are adhered well using a
hydrosilylation reaction curable uorosilicone rubber composition is
produced.
Rubber composition oering high stiness and low hysteresis
U.S. patent: 12,018,154
Issued: June 25, 2024
Inventors: George Jim Papakonstantopoulos and Michael Joseph Rachita
Assigned: Goodyear Tire & Rubber
Key statement: This invention is based upon the discovery that benzoxazine
resins can be incorporated into certain rubber compositions to increase the
stiness thereof without increasing hysteresis or reducing tear strength.
Such benzoxazine resin reinforced rubber formulations can accordingly be
used benecially in components of rubber products where high stiness is
desirable. Since these benzoxazine resin reinforced rubbers do not increase
levels of hysteresis, they can be used in tire components, such as apexes,
chaers and high stiness tread blocks without compromising fuel
eciency. This invention more specically reveals a radial tire having an
apex, a chaer, or a hard tread block segment which is comprised of a
rubbery polymer and a benzoxazine resin.
Tire, wheel and vehicle
U.S. patent: 12,017,488
Issued: June 25, 2024
Inventors: Weixiang Wang, Xinjian Ji and Tuo Jiang
Assigned: Ninebot (Changzhou) Tech
Key statement: A tire, a wheel and a vehicle are provided. The tire includes a
tire body. The tire body has a plurality of cavities along the circumferential
direction, each of the plurality of cavities has an opening located on an inner
circumferential surface of the tire body, a connecting portion is formed
between adjacent openings, the connecting portion comprises a middle
connecting portion and an end connecting portion distributed along a width
direction of the tire body and a width of the middle connecting portion is
constant.
Tire having a composition comprising an ethylene-rich elastomer, a peroxide and a specic acrylate derivative
U.S. patent: 12,017,480
Issued: June 25, 2024
Inventors: Guillaume Pibre, Andrea Messina and Benjamin Gornard
Assigned: Michelin
Key statement: A tire comprises a rubber composition based on at least one
elastomeric matrix mainly comprising a random copolymer comprising
ethylene units and conjugated diene units, the mole fraction of the ethylene
units in the copolymer being within a range extending from 50% to 95%; a
peroxide; and a specic polyfunctional acrylate derivative.
Use of a mixture of organic peroxides for crosslinking a polyolen elastomer
U.S. patent: 12,018,139
Issued: June 25, 2024
Inventors: Jean-Pierre Disson and Chao Lu
Assigned: Arkema France
Key statement: The present invention concerns the use of a mixture of
organic peroxides for crosslinking a polyolen elastomer (POE), in particular
intended to be used in photovoltaic applications. The invention also relates
to a crosslinkable composition comprising at least one polyolen elastomer
(POE) and at least one mixture of organic peroxides. The present invention
also concerns a method for preparing a material made from polyolen
elastomer (POE), preferably an encapsulating material or a sealing agent, in
particular for photovoltaic cells, comprising a step of crosslinking a
crosslinkable composition as dened previously.
Rubber composition for tires and tire
U.S. patent: 12,023,960
Issued: July 2, 2024
Inventor: Shinya Hasegawa
Assigned: Toyo Tire
Key statement: A rubber composition for tires according to an embodiment
includes a diene rubber, a ller and a fatty acid ester of a polyoxyalkylene
glyceryl ether and 50 mass % or more of the ller is carbon black. A tire
according to an embodiment includes the rubber composition for tires.