Patent news.

Rubber composition improved in
anti-static property and pneumatic
tire using the same
U.S. patent: 6,130,277
Issued: October 10, 2000
Inventors: Nobuyuki Okamura,
Masaaki Tsuchihashi and Isao Nishi
Assigned: Bridgestone
Keywords: Anionic anti-static agent,
polyoxyalkylene glycol

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Lightweight high performance
vibration damping system
U.S. patent: 6,130,284
Issued: October 10, 2000
Inventor: Raj V. Singh
Assigned: H.B. Fuller
Keywords: Butyl rubber, spherical
microspheres, specific gravity 1.0 to
1.2, transportation and aerospace industry

Rubber composition, method of formulating
the composition and vehicle
tire made from the composition
U.S. patent: 6,133,364
Issued: October 17, 2000
Inventors: Werner Obrecht, Thomas
Scholl, Peter Wendling, Michael Well
and Victor Monroy
Assigned: Continental AG
Keywords: Gel particles surface has
electrophilic centers, coupling agent
between the gel particles, improved
hysteresis

Process of production
of pneumatic tire
U.S. patent: 6,136,123
Issued: October 24, 2000
Inventors: Hiroyuki Kaido, Kazuto
Yamakawa, Jiro Watanabe, Noriaki
Kuroda and Gou Kawaguchi
Assigned: Yokohama Rubber
Keywords: Air permeation preventive
layer, thermoplastic film

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Method of manufacturing
devulcanized rubber using high
temperature and shearing pressure
U.S. patent: 6,133,413
Issued: October 17, 2000
Inventors: Makoto Mouri, Arimitsu
Usuki, Atsushi Murase, Yasuyuki
Suzuki, Kazuya Watanabe, Hidenobu
Honda, Katsumi Nakashima, Katsumasa
Takeuchi and Masayoshi
Ichikawa
Assigned: KabushikiK Kaisha Toyota
Chuo Kenkyusho, Toyota Jidosha
Kabushiki Kaisha and Toyoda Gosei
Keywords: Heating to 180 [degrees]-350 [degrees] C,
applying a shearing pressure, sulfur
bonds are cut

Rubber processing additive
U.S. patent: 6,136,897
Issued: October 24, 2000
Inventor: Harvey Lewis Kaufman
Assigned: Polymer Process
Technologies
Keywords: A zeolite, high molecular
weight fatty acid, starch to bind rubber
grind to virgin rubber

Process for producing a vulcanizable
rubber composition with silica-based
reinforcing filler
U.S. patent: 6,136,913
Issued: October 24, 2000
Inventors: Marco Nahmias, Robert
Schrafft and Christa Joseph
Assigned: Pirelli Coordinamento
Pneumatici SpA
Keywords: Treads for tires low rolling
resistance

Blast resistant building
U.S. patent: 6,138,420
Issued: October 31, 2000
Inventor: Edward R. Fyfe
Assigned: Fyfe

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Use of arygluanidinium
xanthogenates as vulcanization
accelerators and process for the
production thereof
U.S. patent: 6,136,987
Issued: October 24, 2000
Inventors: Thomas Fruh, Ludger
Heiliger and Hermann Lohwasser
Assigned: Rhein Chemie Rheinau
GmbH

Positive drive rubber track
U.S. patent: 6,139,121
Issued: October 31, 2000
Inventor: Tateo Muramatsu
Assigned: Bridgestone/Firestone

Pneumatic tire provided with
electrically conductive coating
U.S. patent: 6,140,407
Issued: October 31, 2000
Inventors: Keizo Akutagawa, Yasuhiro
Naito and Ken Yamaguchi
Assigned: Bridgestone
Keywords: Carbon black, ([N.sub.2]SA) of 70
[m.sup.2]/g-180, surface active agent

Apparatus and process for repair of
large butterfly valves
U.S. patent: 6,138,989
Issued: October 31, 2000
Inventor: C. Thomas Lynch
Assigned: Site Constructors

Stabilizers and antiozonants for
elastomers
U.S. patent: 6,140,397
Issued: October 31, 2000
Inventors: Hans-Rudolf Meier, Gerrit
Knobloch and Peter Nesvadba
Assigned: Ciba Specialty Chemicals
Keywords: Benzofuran-2-one

Vulcanization accelerators
suitable for the introduction
of polar substituents
U.S. patent: 6,140,427
Issued: October 31, 2000
Inventors: Thomas Scholl, Hermann-Josef
Weidenhaupt, Stefan Kelbch and
Hans-Wilhelm Engels
Assigned: Bayer AG

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Assembling and vulcanizing of tires
U.S. patent: 6,143,110
Issued: November 7, 2000
Inventor: Daniel Laurent
Assigned: Sedepro

Coupling agent composition
U.S. patent: 6,147,147
Issued: November 14, 2000
Inventors: James W. Hoover and E.
Timothy McDonel
Assigned: Flow Polymers
Keywords: The coupling agent includes
an organosilane, a powderizing agent
and a fatty acid dispersion aid including
fatty acid and a salt-forming agent

Heavy duty pneumatic radial tires
with specified cushion rubbers
U.S. patent: 6,145,560
Issued: November 14, 2000
Inventors: Seiji Yamada and Hiroshi
Nakata
Assigned: Bridgestone

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Tread rubber composition and tire
using the composition
U.S. patent: 6,147,151
Issued: November 14, 2000
Inventors: Takahiro Fukumoto, Yoko
Nakada, Yoichi Mizuno and Kazuo
Kadomaru
Assigned: Sumitomo Rubber Industries
Keywords: Excellent hydrophobic
property, water repellency, excellent
performance on ice

Organosilane cured butyl
rubber/polypropylene TPV
U.S. patent: 6,147,160
Issued: November 14, 2000
Inventors: Donald S.T. Wang and
Robert E. Medsker
Assigned: Advanced Elastomer Systems
Keywords: Hydrosilylation crosslinking
of a butyl rubber isobutylene and
divinylbenzene

Multilayer coextruded material
for medical grade products
and products therefrom
U.S. patent: 6,149,997
Issued: November 21, 2000
Inventors: Indrajit Patel, Harold Bowerman,
Larry Rosenbaum, Rich Mennenoh
and Pat Ryan
Assigned: Baxter International
Keywords: Multilayer coextruded
structure including polyurethane and
polyester, polypropylene, etc.

Thermally conductive vibration
isolators
U.S. patent: 6,151,216
Issued: November 21, 2000
Inventors: David L. Vos and Francis
W. Hughto-Deizer
Assigned: Lockheed Martin

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High modulus belt composition and
belts made therewith
U.S. patent: 6,153,686
Issued: November 28, 2000
Inventors: Daniel Stanley Granatowicz,
Mathew Thomas Morris, Mervin Victor
Pilkington and Gary Richard Tompkin
Assigned: Goodyear Tire & Rubber
Keywords: Hydrogenated acrylonitrile
butadiene rubber, zinc methacrylate

Vehicle tire suitable for cooperation
with a device for determining the
longitudinal force acting on the tire
or the tire spring travel or the
footprint length or the load/pressure
ratio during transformation
U.S. patent: 6,161,431
Issued: December 19, 2000
Inventors: Eberhard Drahne and
Thomas Becherer
Assigned: Continental AG
Keywords: Detectable by magnetic or
inductive sensors, derived signals
determine longitudinal force

Personal care compositions
containing thermoplastic
elastomeric graft copolymers
U.S. patent: 6,165,455
Issued: December 26, 2000
Inventors: Peter Marte Torgerson and
Sanjeev Midha
Assigned: Procter & Gamble
Keywords: Hair care nonpolar graft
thermoplastic elastomeric copolymers,
water insoluble volatile solvent styling
products, sprays and mousses