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Bridgestone Corporation patents (2014 archive)

Recent patent applications related to Bridgestone Corporation. Bridgestone Corporation is listed as an Agent/Assignee. Note: Bridgestone Corporation may have other listings under different names/spellings. We're not affiliated with Bridgestone Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "B" | Bridgestone Corporation-related inventors

12/25/14 / #20140378630

Bulk polymerization process for producing polydienes

A process for preparing a polydiene, the process comprising the steps of: polymerizing conjugated diene monomer with a metallocene complex catalyst system within a polymerization mixture that includes less than 20% by weight of solvent based on the total weight of the polymerization mixture, where the metallocene complex catalyst system includes the combination or reaction product of: (a) metallocene complex, (b) an alkylating agent, and optionally (c) a non-coordinating anion.. . ... Bridgestone Corporation

12/25/14 / #20140378030

Pneumatic tire and method of manufacturing tire vulcanization mold

A pneumatic tire has an outer surface with an arithmetical mean roughness ra in the range of 0.1 μm to 0.6 μm when a reference length lr is 20 μm, wherein the outer surface has an irregularity diameter in the range of 40-230 μm and an irregularity depth in the range of 3-22 μm. A method of manufacturing a tire vulcanization mold includes propelling spherical abrasive grains onto the surface of the mold under the condition that a propelling pressure is in the range of 0.1-0.6 mpa, so as to process the surface of the mold.. ... Bridgestone Corporation

12/25/14 / #20140373995

Pneumatic tire

A tire comprising a tread portion, a bead portion including a bead core, and a body ply including a turn-up portion positioned on an exterior of the tire, the turn-up portion of the body ply extending between said bead core and said tread and across a side portion of the tire.. . ... Bridgestone Corporation

12/25/14 / #20140373993

Pneumatic tire

Provided is a pneumatic tire having excellent durability and driving stability during high-speed running of the vehicle (that is, during high-speed rotation of the tire). The pneumatic tire includes: a carcass; an intersecting belt which is provided on the outer circumference side of a crown portion of the carcass and formed of two inclined belt layers having cords inclined and extending in a direction intersecting each other across a tire equatorial plane; and a circumferential belt layer which is provided on either one of the inner side and the outer side of the intersecting belt in the tire radial direction and includes a spiral cord arranged as being spirally wound at an inclination angle of equal to or smaller than 5 degrees to the tire equatorial plane. ... Bridgestone Corporation

12/18/14 / #20140371380

Rubber tyre compound with improved crack propagation resistance

. . A rubber tyre compound having at least a polymer base; a filler; a curing system; and treated silica with an adsorbed curing activator in the group including sulphenamides, benzothiazoles, guanidines and thiurams.. . ... Bridgestone Corporation

12/18/14 / #20140371004

Solid golf ball

The invention provides a solid golf ball which has a core of at least one layer and a cover of at least one layer. At least one layer of the core is formed primarily of polybutadiene and includes at least 0.05 part by weight of a polyurethane resin powder having an average particle size of not more than 2 mm per 100 parts by weight of rubber component. ... Bridgestone Corporation

12/18/14 / #20140367884

Method for forming golf ball and mold therefor

A method for forming a golf ball provides a core member comprising a core of a golf ball into a cavity of a mold so that the core member is supported by a movable holding pin disposed in the mold; forming a layer outside the core member by injecting a material of the layer into the cavity; and retracting the pin from the cavity into the mold during the material injection so that a portion projecting from a surface of the layer is formed by a tip of the pin, the projecting portion having a site area of at least 0.2% in relation to an entire area of the tip of the pin and having a height of at least 0.2 mm. This method can be implemented by controlling the retraction of the pin, or alternatively by using the pin having a predetermined indentation portion on the tip.. ... Bridgestone Corporation

12/18/14 / #20140367010

Tire and tire forming mold

A tire of the present invention has surface properties at which the kurtosis of the assessed profile rku is 2 or less on at least a part of the tread surface of the tread portion. In addition, a tire forming mold of the present invention has a kurtosis of the assessed profile rku of 2 or less on at least a part of the tread-surface molding surface.. ... Bridgestone Corporation

12/18/14 / #20140366945

Solar cell sealing film and solar cell using the same

The present invention provides a solar cell sealing film whereby generation of gas is decreased. The solar cell sealing film comprises a resin mixture of an ethylene-vinyl acetate copolymer and a polyethylene, and an organic peroxide. ... Bridgestone Corporation

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This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. is not affiliated or associated with Bridgestone Corporation in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Bridgestone Corporation with additional patents listed. Browse our Agent directory for other possible listings. Page by