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4-Traders Homepage  >  Equities  >  Tokyo  >  Sumitomo Rubber Industries Ltd    5110   JP3404200002

SUMITOMO RUBBER INDUSTRIES LTD (5110)
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Sumitomo Rubber Industries : "Tire" in Patent Application Approval Process (USPTO 20180186193)

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07/20/2018 | 09:59am CEST

By a News Reporter-Staff News Editor at Politics & Government Week -- A patent application by the inventor Kitani, Naofumi (Kobe-shi, JP), filed on December 12, 2017, was made available online on July 12, 2018, according to news reporting originating from Washington, D.C., by VerticalNews correspondents.

This patent application is assigned to Sumitomo Rubber Industries Ltd.

The following quote was obtained by the news editors from the background information supplied by the inventors: "For example, Japanese unexamined Patent Application Publication No. 2005-280457 (Patent Literature 1) has proposed a tire having land regions divided by a main groove extending straight and a main groove extending in a zigzag manner. The land regions of the tire disclosed in Patent Literature 1 are provided with a narrow groove or a longitudinal sipe extending straight.

"However, the tire disclosed in Patent Literature 1 has room for further improvement of the on-ice/on-snow performance."

In addition to the background information obtained for this patent application, VerticalNews journalists also obtained the inventor's summary information for this patent application: "The present invention was made in view of the above, and a primary object thereof is to provide a tire having excellent on-ice/on-snow performance.

"In one aspect of the present invention, a tire comprises a tread portion comprising two main grooves extending continuously in a tire circumferential direction in zigzag shapes and a land region defined between the two main grooves, wherein phases of the zigzag shapes of the two main grooves are aligned with each other, the land region is provided with a longitudinal sipe extending in the tire circumferential direction in a zigzag shape, and a phase of the zigzag of the longitudinal sipe is opposite to the phases of the zigzags of the two main grooves.

"In another aspect of the invention, it is preferred that the land region is provided with a plurality of first lateral grooves extending from the main groove arranged on one side toward the main groove arranged on the other side and terminating within the land region and a plurality of second lateral grooves extending from the main groove arranged on the other side toward the main groove arranged on the one side and terminating within the land region, the longitudinal sipe extends between the first lateral grooves and the second lateral grooves, and the land region includes first blocks divided by the longitudinal sipe and the plurality of the first lateral grooves and second blocks divided by the longitudinal sipe and the plurality of the second lateral grooves.

"In another aspect of the invention, it is preferred that each of the first blocks and the second blocks is provided with a plurality of lateral narrow groove pairs composed of two crown lateral narrow grooves completely crossing the entire width of the block.

"In another aspect of the invention, it is preferred that each of the first blocks and the second blocks includes a plurality of small block pieces each defined between the two crown lateral narrow grooves of one of the lateral narrow groove pairs, the small block pieces include a first small block piece provided at a center portion in the tire circumferential direction of the first block or the second block, and second small block pieces having greater lengths in the tire axial direction than that of the first small block piece, and each of the first small block pieces provided in the first blocks is adjacent to one of the second small block pieces provided in the second blocks with the longitudinal sipe therebetween.

"In another aspect of the invention, it is preferred that the longitudinal sipe includes first apex portions convex toward one of the main grooves and second apex portions convex toward the other one of the main grooves, and the lateral narrow grooves of at least one of the lateral narrow groove pairs are connected with the longitudinal sipe at both sides in the tire circumferential direction of one of the first apex portions or one of the second apex portions.

"In another aspect of the invention, it is preferred that at least one of the lateral narrow grooves provided in the first blocks is smoothly connected with one of the lateral narrow grooves provided in the second blocks with the longitudinal sipe therebetween.

"In another aspect of the invention, it is preferred that a minimum distance between edges of the two lateral narrow grooves is in a range of from 2.0 to 5.0 mm.

"In another aspect of the invention, it is preferred that each of the lateral narrow grooves includes, in a cross-sectional view thereof, an outer portion disposed on a side of the ground contacting surface and an inner portion disposed on an inner side in a tire radial direction of the outer portion and extending with a constant width of less than 1.5 mm.

"In another aspect of the invention, it is preferred that each of the lateral narrow grooves has a depth in a range of from 0.60 to 0.70 times a depth of each of the main grooves.

"In another aspect of the invention, it is preferred that the lateral narrow grooves have the same depths as that of the longitudinal sipe.

"In another aspect of the invention, it is preferred that bending angles of the zigzag of the longitudinal sipe are smaller than bending angles of the zigzags of the main grooves.

"In another aspect of the invention, it is preferred that the main grooves include a pair of crown main grooves, one of the pair of the crown main grooves is arranged on one side of a tire equator and the other one of the pair of the crown main grooves is arranged on the other side of the tire equator, the land region includes a crown land region defined between the first crown main groove and the second crown main groove, and the longitudinal sipe includes a crown longitudinal sipe provided in the crown land region.

"In another aspect of the invention, it is preferred that the main grooves include a pair of shoulder main grooves each arranged closest to respective one of tread edges and a pair of crown main grooves each arranged on a side of a tire equator of respective one of the shoulder main grooves, the land region includes a middle land region defined between one of the shoulder main grooves and one of the crown main grooves adjacent thereto and the longitudinal sipe includes a middle longitudinal sipe provided in the middle land region."

URL and more information on this patent application, see: Kitani, Naofumi. Tire. Filed December 12, 2017 and posted July 12, 2018. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220180186193%22.PGNR.&OS=DN/20180186193&RS=DN/20180186193

Keywords for this news article include: Business, Sumitomo Rubber Industries Ltd.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2018, NewsRx LLC

(c) 2018 NewsRx LLC, source Government & Education Newsletters

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Sales 2018 913 B
EBIT 2018 -
Net income 2018 49 300 M
Debt 2018 190 B
Yield 2018 3,41%
P/E ratio 2018 9,38
P/E ratio 2019 8,87
EV / Sales 2018 0,72x
EV / Sales 2019 0,68x
Capitalization 465 B
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Average target price 1 973  JPY
Spread / Average Target 12%
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Ikuji Ikeda President & Representative Director
Hiroaki Tanaka Representative Director & Vice President
Keizo Kosaka Independent Non-Executive Outside Director
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Minoru Nishi Representative Director
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