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41. 发明公开

EP4223556A1 PNEUMATIC TIRE 有权
公开(公告)号：EP4223556A1
公开(公告)日：2023-08-09
申请号：EP23153589.9
申请日：2023-01-27
申请人： Sumitomo Rubber Industries, Ltd.
发明人： MATSUI, Tomoya
IPC分类号： B60C1/00 , B60C11/00 , C08K3/36
摘要： Provided is a pneumatic tire that has sufficiently improved steering stability on a wet road surface during high speed running. The pneumatic tire is a pneumatic tire including a circumferential main groove on a tread portion, wherein an outermost layer of the tread portion is formed by using a rubber composition containing vulcanized rubber powder, an area ratio S (%) of the vulcanized rubber powder in a cross-section of the outermost layer is not less than 5% and not greater than 50%, a loss tangent (30°C tanδ) of the rubber composition measured under conditions of 30°C, a frequency of 10 Hz, an initial strain of 5%, and a dynamic strain rate of 1% with deformation mode: tension is not greater than 0.15, a groove depth D (mm) of the circumferential main groove is greater than 6 mm, and S/D > 0.85 is satisfied.

42. 发明公开

EP4219193A1 TYRE AND METHOD FOR USING THE SAME 审中-实审
公开(公告)号：EP4219193A1
公开(公告)日：2023-08-02
申请号：EP22207959.2
申请日：2022-11-17
申请人： Sumitomo Rubber Industries, Ltd.
发明人： KOKI, NAGASAWA
IPC分类号： B60C11/00 , B60C11/24 , B60C11/12 , B60C11/03 , B60C11/13
摘要： A tyre (1) includes a tread portion (2) including a ground contact surface (13), a first rubber layer (21) made of a first cap rubber forming part of the ground contact surface, a second rubber layer (22) made of a second cap rubber disposed radially inwardly of the first rubber layer, and at least one groove portion (5) opening to the ground contact surface. The first cap rubber has a loss tangent tanδ1, and the second cap rubber has a loss tangent tanδ2 greater than the loss tangent tanδ1. The groove portion includes a first indicator (15) in which a bottom of the groove portion locally raises, the first indicator having an outer surface (15o) in a tyre radial direction. The radially outer surface of the first indicator substantially coincides with a first wear line (16) that is parallel to the ground contact surface and passes through a radially outer surface (22o) of the second rubber layer.

43. 发明公开

EP4219192A1 PNEUMATIC TIRE 审中-实审
公开(公告)号：EP4219192A1
公开(公告)日：2023-08-02
申请号：EP23165530.9
申请日：2021-12-16
申请人： Sumitomo Rubber Industries, Ltd.
发明人： MISAKI, Momoka , MIAO, Dong , HIROKI, Kawai
IPC分类号： B60C9/00 , B60C11/03 , B60C9/18 , B60C11/00
摘要： To provide a pneumatic tire in which both low rolling resistance and improvement of noise performance at high-speed driving are sufficiently achieved, it is provided a pneumatic tire having a tread portion and a belt layer, wherein the tread portion is arranged on the outer side of the belt layer in the tire radial direction, the reinforcing cord in the belt layer is composed of cords made of monofilaments in which 50 lines/5 cm or more of the monofilaments are arranged in the tire width direction in the tire radial cross section of the belt layer, and the maximum load capacity of the tire WL(kg) and the weight of the tire WT(kg) satisfy 0.0145 ≤ (WT/WL).

44. 发明授权

EP4003761B1 PNEUMATIQUE COMPORTANT UNE BANDE DE ROULEMENT 有权
公开(公告)号：EP4003761B1
公开(公告)日：2023-07-05
申请号：EP20757643.0
申请日：2020-07-27
发明人： BOISDON, Bertrand , VANTAL, Marie-Hélène
IPC分类号： B60C11/03 , B60C11/12 , B60C1/00 , C08C19/25 , C08L19/00 , C08L15/00 , C08L57/02 , C08L91/00 , C08K3/36 , B60C11/00

45. 发明授权

EP3730316B1 PNEUMATIC TIRE 有权
公开(公告)号：EP3730316B1
公开(公告)日：2023-07-05
申请号：EP18891375.0
申请日：2018-12-03
发明人： NAKATA, Yoshiki
IPC分类号： B60C11/12 , B60C11/00 , B60C11/03

46. 发明公开

EP4201704A1 TIRE 有权转让
公开(公告)号：EP4201704A1
公开(公告)日：2023-06-28
申请号：EP22210074.5
申请日：2022-11-29
申请人： Sumitomo Rubber Industries, Ltd.
发明人： KIKUCHI, Hiroshi , OSAWA, Takuya , SHIMIZU, Jo
IPC分类号： B60C9/20 , B60C9/28 , B60C11/00 , B60C11/01 , B60C11/03
摘要： A tire 2 includes a tread 4 and a belt 14 including inner and outer layers 38 and 40. Each end of the outer layer 40 is located axially inward of an end of the inner layer 38. A circumferential narrow groove 48 is formed on each shoulder land portion 46s so as to continuously extend in a circumferential direction. A groove width of the circumferential narrow groove 48 is smaller than that of a shoulder circumferential groove 44s. The circumferential narrow groove 48 is located between the shoulder circumferential groove 44s and the end of the outer layer 40 in an axial direction. A ratio of a distance in the axial direction from the shoulder circumferential groove 44s to the circumferential narrow groove 48 to a distance in the axial direction from the shoulder circumferential groove 44s to the end of the outer layer 40 is 15% to 55%.

47. 发明公开

EP4201699A1 TIRE 审中-实审
公开(公告)号：EP4201699A1
公开(公告)日：2023-06-28
申请号：EP21880198.3
申请日：2021-10-14
申请人： Sumitomo Rubber Industries, Ltd.
发明人： ICHIMOTO, Yamato , ONO, Shuichiro
IPC分类号： B60C1/00 , C08L15/00 , C08L21/00 , C08L45/00 , C08L57/02 , C08L101/02 , B60C11/00 , B60C11/13
摘要： Provided is a tire comprising a tread, wherein the tread has land parts partitioned by a plurality of circumferential grooves and has a portion where a length in a width direction of the land part closest to a tire equatorial plane increases from outside to inside in a tire radial direction, in a tire meridian cross section including a tire rotation axis, wherein the tread has at least one rubber layer, wherein a contact surface of the tread is constituted by a first rubber layer, the first rubber layer being composed of a rubber composition comprising a rubber component comprising a diene-based rubber, and wherein both a contact angle A1 with pure water, measured after immersing the rubber composition of the first rubber layer in water at 23°C under a normal pressure for 1 hour and further leaving it to stand at 23°C under the normal pressure for 24 hours to dry it, and a contact angle A2 with pure water, measured after immersing the rubber composition of the first rubber layer in water at 23°C under a normal pressure for 1 hour and further leaving it to stand at 23°C under the normal pressure for 24 hours to dry it, after the measurement of the contact angle A1, are 80° or lower.

48. 发明公开

EP4200140A1 TIRE TREAD WITH A BAND LAYER 审中-实审
公开(公告)号：EP4200140A1
公开(公告)日：2023-06-28
申请号：EP21858790.5
申请日：2021-07-28
申请人： Bridgestone Americas Tire Operations, LLC
发明人： RIMAI, Benjamin E. , PLOTNER, Bradley S. , GRIEBEL, Jared J. , NELSON, Brandon P.
IPC分类号： B60C7/18 , B60C11/00 , B60C9/18 , B60B9/26

49. 发明授权

EP3687836B1 TRUCK TIRE WITH TREAD DESIGN FOR REDUCING ABNORMAL WEAR 有权
公开(公告)号：EP3687836B1
公开(公告)日：2023-05-31
申请号：EP17781327.6
申请日：2017-09-28
发明人： MAYNI, Paul, Andrew , TROWBRIDGE, Jeremy
IPC分类号： B60C11/00 , B60C11/12 , B60C11/02

50. 发明授权

EP3658390B1 PNEUMATIQUE AVEC BANDE DE ROULEMENT COMPORTANT UNE SCULPTURE ÉVOLUTIVE AVEC INCISIONS 有权
公开(公告)号：EP3658390B1
公开(公告)日：2023-05-17
申请号：EP18742741.4
申请日：2018-07-11
发明人： BLOUIN, Damien , BONNETON, Quentin
IPC分类号： B60C11/03 , B60C11/12 , B60C11/00

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