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42. 发明授权

EP3950381B1 TIRE 有权
公开(公告)号：EP3950381B1
公开(公告)日：2023-09-13
申请号：EP21184066.5
申请日：2021-07-06
发明人： NAKATANI, Masako
IPC分类号： B60C1/00 , B60C11/00 , C08L21/00

43. 发明授权

EP3725556B1 PNEUMATIC TIRE 有权
公开(公告)号：EP3725556B1
公开(公告)日：2023-09-06
申请号：EP18889421.6
申请日：2018-12-10
发明人： TOMIDA, Tatsuya
IPC分类号： B60C11/13 , B60C11/00 , B60C11/03 , B60C11/12 , B60C11/04 , B60C19/00

44. 发明授权

EP3725551B1 HEAVY-DUTY TIRE 有权
公开(公告)号：EP3725551B1
公开(公告)日：2023-09-06
申请号：EP18888100.7
申请日：2018-07-19
发明人： NAKASATO, Reo , SATO, Taiki
IPC分类号： B60C11/01 , B60C9/18 , B60C11/00

45. 发明授权

EP4019278B1 NON-PNEUMATIC TIRE 有权
公开(公告)号：EP4019278B1
公开(公告)日：2023-08-23
申请号：EP21214651.8
申请日：2021-12-15
发明人： TAHARA, Hiroshi
IPC分类号： B60C7/14 , B60C11/00

46. 发明授权

EP4003757B1 PNEUMATIQUE COMPORTANT UNE BANDE DE ROULEMENT 有权
公开(公告)号：EP4003757B1
公开(公告)日：2023-07-05
申请号：EP20757936.8
申请日：2020-07-27
发明人： BOISDON, Bertrand , VANTAL, Marie-Hélène
IPC分类号： B60C1/00 , B60C11/03 , B60C11/12 , C08C19/25 , C08L19/00 , B60C11/00 , C08L15/00 , C08L57/02 , C08L91/00 , C08K3/36

47. 发明授权

EP4108475B1 TYRE 有权
公开(公告)号：EP4108475B1
公开(公告)日：2023-06-28
申请号：EP22176946.6
申请日：2022-06-02
发明人： ISHIGAKI, Yuichi , TSUZUKI, Yuka
IPC分类号： B60C11/00 , B60C11/03 , B60C11/12

48. 发明公开

EP4190593A1 PNEUMATIC TIRE 审中-实审
公开(公告)号：EP4190593A1
公开(公告)日：2023-06-07
申请号：EP21858137.9
申请日：2021-07-29
申请人： Sumitomo Rubber Industries, Ltd.
发明人： HAMAMURA, Kenji , KAWAI, Hiroki , TOYA, Subaru
IPC分类号： B60C9/20 , B60C3/04 , B60C11/00 , B60C11/03 , B60C11/13
摘要： Provided is a pneumatic tire with which any change in steering stability between low-speed running and high-speed running is sufficiently minimized, and durability is also sufficiently improved. This pneumatic tire has a belt layer radially inward of the tread portion, wherein the ratio (tan δ/E*) of the loss tangent (tan δ) to the complex elastic modulus E*(MPa) of the rubber composition constituting the belt layer, as measured under the conditions of 70°C, frequency 10 Hz, initial distortion 5%, and dynamic distortion rate 1%, is 0.002 to 0.017 (inclusive), and the (formula 1) and (formula 2) are satisfied, where Wt (mm) is the cross-sectional width of the tire, Dt (mm) is the outside diameter, and the virtual volume V (mm 3 ) is the volume of the space occupied by the tire, when the tire is installed on a standardized rim and the internal pressure is 250 kPa. 1700 ≤ Dt 2 × π / 4 Wt ≦ 2827 .4 V + 1 .5 × 10 7 / Wt ≦ 2 .88 × 10 5

49. 发明公开

EP4190590A1 PNEUMATIC TIRE 审中-实审
公开(公告)号：EP4190590A1
公开(公告)日：2023-06-07
申请号：EP21848884.9
申请日：2021-07-21
申请人： Sumitomo Rubber Industries, Ltd.
发明人： HAMAMURA, Kenji , KAWAI, Hiroki , TOYA, Subaru
IPC分类号： B60C3/04 , B60C11/00
摘要： Provided is a pneumatic tire with sufficiently improved grip and durability at high-speed running, by which the pneumatic tire can exhibit excellent grip at high-speed running as well as superior durability. The pneumatic tire has a tread and is characterized in that the ground contact surface of the tread is formed by at least two types of rubber compositions different in the thermal conductivity, and the following formulas (1) and (2) are satisfied, where Wt (mm) is the cross-sectional width and Dt (mm) is the outer diameter of the tire when installed on a standardized rim and inflated to an internal pressure of 250 kPa, and V (mm 3 ) is the virtual volume of the space occupied by the tire. 1700 ≦ Dt 2 × π / 4 / Wt ≦ 2827.4 V + 1.5 × 10 7 / Wt ≦ 2.88 × 10 5

50. 发明公开

EP4190587A1 TIRE 审中-实审
公开(公告)号：EP4190587A1
公开(公告)日：2023-06-07
申请号：EP22196654.2
申请日：2022-09-20
申请人： Sumitomo Rubber Industries, Ltd.
发明人： YAMAMOTO, Keisuke
IPC分类号： B60C1/00 , B60C11/00 , B60C11/03 , C08K3/04 , C08K3/36
摘要： An object of the present invention is to provide a tire having improved overall performance of grip performance during straight running and grip performance during cornering under a high-speed running condition. Provided is a tire having a tread part in which a mounting direction to a vehicle is specified, wherein the tread part has an inner tread rubber layer (52) forming an end side inside the vehicle when the tire is mounted to the vehicle and an outer tread rubber layer (53) forming an end side outside the vehicle when the tire is mounted to the vehicle, wherein a ratio of a distance D from a grounding end outside the vehicle to an interface between the inner tread rubber layer and the outer tread rubber layer with respect to a distance W L between a grounding end inside the vehicle and the grounding end outside the vehicle (D/W L ) is 0.50 or more, wherein an average value of a loss tangent tan δ at 0°C to 50°C of the inner tread rubber layer, measured under a condition of a frequency of 10 Hz, an initial strain of 1%, and an amplitude of ± 0.1%, is defined as tan δA in , tan δA in is 0.30 or less, and wherein an average value of a loss tangent tan δ at 0°C to 50°C of the outer tread rubber layer, measured under a condition of a frequency of 10 Hz, an initial strain of 1%, and an amplitude of ± 0.1%, is defined as tan δA out , tan δA out is 0.40 or more.

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