Patents by Inventor Murali Rajagopalan

Murali Rajagopalan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130274033
    Abstract: A golf ball includes an inner core layer formed from a thermoset rubber composition. The inner core layer has a first outer surface Shore D hardness and an outer diameter of about 0.8 to 1.40 inches. A thermoplastic outer core layer is formed around the inner core layer, has a second outer surface Shore D hardness, and is formed from a copolymer of ethylene and an ?,?-unsaturated carboxylic acid, a magnesium salt of oleic acid, and sufficient cation source to fully-neutralize the acid groups of the copolymer. The golf ball includes an inner cover layer and an outer cover layer. The first outer surface Shore D hardness is greater than the second outer surface Shore D hardness and the outer core layer has a thickness of about 0.01 inches to 0.05 inches.
    Type: Application
    Filed: June 5, 2013
    Publication date: October 17, 2013
    Inventors: Murali Rajagopalan, Michael J. Sullivan
  • Patent number: 8551394
    Abstract: Compositions for golf balls including multi-modal ionomers that can be used in any layer of a golf ball, e.g., an outer cover layer or inner cover layer. The compositions of the invention can be a blend of a multi-modal ionomer and a conventional ionomer, highly neutralized polymer, acid copolymer, or other suitable thermoplastic polymer.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: October 8, 2013
    Assignee: Acushnet Company
    Inventors: Michael D. Jordan, Murali Rajagopalan
  • Patent number: 8524852
    Abstract: Golf balls containing at least one layer made from a thermoset polyurethane or polyurethane-urea that is the reaction product of a polyisocyanate with moisture-resistant polyol and a curing agent are provided. The moisture-resistant polyol may be prepared by dimerizing unsaturated aliphatic monocarboxylic acid or ester containing 10 to 60 carbon atoms followed by reacting it with a monomeric, oligomeric, or polymeric diol. In one preferred version, the moisture-resistant polyol is a branched polyester polyol containing 36 carbon atoms. The composition can be prepared using prepolymer or one-shot manufacturing techniques. The thermoset composition has good cross-link density. The resulting golf ball has desirable playing performance properties including high resiliency, toughness, impact durability, moisture-resistance, and soft feel.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: September 3, 2013
    Assignee: Acushnet Company
    Inventors: Murali Rajagopalan, Michael Michalewich, Shawn Ricci, Michael J. Sullivan
  • Patent number: 8465381
    Abstract: A golf ball including an inner core layer formed from a thermoset rubber composition and having a first surface hardness; a thermoplastic outer core layer having a second surface hardness, an inner surface hardness, and being formed from a copolymer of ethylene and an ?,?-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer; an inner cover layer; and an outer cover layer; wherein the first surface hardness is substantially the same as the second surface hardness and the inner surface hardness.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: June 18, 2013
    Assignee: Acushnet Company
    Inventors: Murali Rajagopalan, Michael J. Sullivan
  • Patent number: 8444508
    Abstract: A golf ball includes a core having a diameter, a first Shore D hardness and a compression; and a cover having a second Shore D hardness that is at least 5 points less than the first Shore D hardness. The cover includes an ionomer of an alternate copolymer, the alternate copolymer being formed from the reaction product of a copolymer of ethylene and maleic anhydride monomer in the presence of a suitable base, the maleic anhydride monomer being present in an amount of about 78 wt %.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: May 21, 2013
    Assignee: Acushnet Company
    Inventors: Murali Rajagopalan, Michael J. Sullivan
  • Patent number: 8353788
    Abstract: The present invention is directed to a golf ball that contains an interpenetrating polymer network, or IPN, including at least two polymeric components. These IPNs may be present in any golf ball layer, although in an intermediate or cover layer in one preferred embodiment. The present invention is also directed to methods of forming a golf ball containing an IPN in one or more of the layers.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: January 15, 2013
    Assignee: Acushnet Company
    Inventors: Manjari Kuntimaddi, Shenshen Wu, Kevin M. Harris, Murali Rajagopalan, David A. Bulpett, Mitchell E. Lutz
  • Patent number: 8324317
    Abstract: The present invention is directed to golf balls having at least one layer which comprises a polymer produced by a process wherein one or more monomers are contacted with a composition comprising the admixture or reaction product resulting from combining (A) a first olefin polymerization catalyst, (B) a second olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by the first olefin polymerization catalyst under equivalent polymerization conditions, and (C) a chain shuttling agent. Golf balls of the present invention include one-piece, two-piece, and multi-layer golf balls. In two-piece and multi-layer golf balls of the present invention, the polymer may be present in a core layer, a cover layer, an intermediate layer (in the case of multi-layer balls), or a combination thereof.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: December 4, 2012
    Assignee: Acushnet Company
    Inventors: Brian Comeau, David A. Bulpett, Kevin M. Harris, Murali Rajagopalan
  • Publication number: 20120264736
    Abstract: This invention discloses novel gamma secretase inhibitors of the formula: R2 and R3, or R2 and R4, or R3 and R4, together with the atoms to which they are bound, can form a fused cycloalkyl or fused heterocycloalkyl ring. The cycloalkyl ring or the heterocycloalkyl ring can be optionally substituted with one or more substituents. One or more compounds of formula (I), or formulations comprising such compounds, may be useful, e.g. in treating Alzheimer's Disease.
    Type: Application
    Filed: October 6, 2011
    Publication date: October 18, 2012
    Applicant: Schering Corporation
    Inventors: Theodros Asberom, Thomas A. Bara, Chad E. Bennett, Duane A. Burnett, Mary Ann Caplen, John W. Clader, David J. Cole, Martin S. Domalski, Hubert B. Josien, Chad E. Knutson, Hongmei Li, Mark D. McBriar, Dmitri A. Pissarnitski, Li Qiang, Murali Rajagopalan, Thavalakulamgara K. Sasikumar, Jing Su, Haiqun Tang, Wen-Lian Wu, Ruo Xu, Zhiqiang Zhao
  • Patent number: 8288478
    Abstract: Golf balls containing at least one layer made from a thermoplastic polyurethane or polyurethane-urea that is the reaction product of a polyisocyanate with moisture-resistant polyol and a curing agent are provided. The moisture-resistant polyol may be prepared by dimerizing unsaturated aliphatic monocarboxylic acid or ester containing 10 to 60 carbon atoms followed by reacting it with a monomeric, oligomeric, or polymeric diol. In one preferred version, the moisture-resistant polyol is a branched polyester polyol containing 36 carbon atoms. The composition can be prepared using prepolymer or one-shot manufacturing techniques. The resulting golf ball has desirable playing performance properties including high resiliency, toughness, impact durability, moisture-resistance, and soft feel.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: October 16, 2012
    Assignee: Acushnet Company
    Inventors: Murali Rajagopalan, Derek A. Ladd, Michael J. Sullivan
  • Publication number: 20120252603
    Abstract: A golf ball including an inner core layer formed from a thermoset rubber composition and having a first surface hardness; a thermoplastic outer core layer having a second surface hardness, an inner surface hardness, and being formed from a copolymer of ethylene and an ?,?-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer; an inner cover layer; and an outer cover layer; wherein the first surface hardness is substantially the same as the second surface hardness and the inner surface hardness.
    Type: Application
    Filed: March 9, 2012
    Publication date: October 4, 2012
    Inventors: Murali Rajagopalan, Michael J. Sullivan
  • Patent number: 8262512
    Abstract: The present invention is directed to golf balls having a layer formed from a relatively soft HNP composition and a layer formed from a relatively hard HNP composition. Golf balls of the present invention have at least three layers, including an inner core layer, an outer core layer, a cover, and optionally an intermediate core layer. The present invention is not limited by which golf ball layers are formed from an HNP composition, so long as at least one layer is formed from a relatively soft HNP composition and at least one layer is formed from a relatively hard HNP composition. Relatively soft HNP compositions of the present invention comprise a highly neutralized acid copolymer preferably having a modulus of from 1,000 psi to 50,000 psi. Relatively hard HNP compositions of the present invention comprise a highly neutralized acid copolymer preferably having a modulus of from 25,000 psi to 150,000 psi.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: September 11, 2012
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Derek A. Ladd, Edmund A. Hebert, Murali Rajagopalan
  • Patent number: 8257201
    Abstract: A golf ball including an inner core layer formed from a thermoset rubber composition and having a first surface hardness; a thermoplastic outer core layer having a second surface hardness, an inner surface hardness, and being formed from a copolymer of ethylene and an ?,?-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer; an inner cover layer; and an outer cover layer; wherein the first surface hardness is less than the second surface hardness by at least 5 Shore C and less than the inner surface hardness by at least 5 Shore C.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: September 4, 2012
    Assignee: Acushnet Company
    Inventors: Murali Rajagopalan, Michael J. Sullivan
  • Patent number: 8241146
    Abstract: This invention is related to multi-layer golf balls having at least one layer containing a neutralized high acid ionomer linked to a grafted metallocene copolymer, where the golf balls exhibit improved performance characteristics and properties.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: August 14, 2012
    Assignee: Acushnet Company
    Inventors: Murali Rajagopalan, Kevin M. Harris, Michael J. Sullivan, Douglas E. Jones, Derek A. Ladd, Scott Cooper
  • Patent number: 8227565
    Abstract: A method of forming golf balls with at least a portion formed from polyurethane and polyurea compositions employing a curative blend that includes a pigment, a curing agent, and a compatible freezing point depressing agent so that the curative blend has a lower freezing point than the curing agent by itself and the blend does not lose pigment dispersion upon solidification and subsequent thawing.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: July 24, 2012
    Assignee: Acushnet Company
    Inventors: Shenshen Wu, Kelly J. Gasper, Constantine A. Kondos, Murali Rajagopalan
  • Patent number: 8221267
    Abstract: A golf ball including an inner core layer formed from a thermoset rubber composition and having a first surface hardness; a thermoplastic outer core layer having a second surface hardness, an inner surface hardness, and being formed from a copolymer of ethylene and an ?,?-unsaturated carboxylic acid, an organic acid or salt thereof, and sufficient cation source to fully-neutralize the acid groups of the copolymer; an inner cover layer; and an outer cover layer; wherein the first surface hardness is less than the second surface hardness by at least 5 Shore C and less than the inner surface hardness by at least 5 Shore C.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: July 17, 2012
    Assignee: Acushnet Company
    Inventors: Murali Rajagopalan, Michael J. Sullivan
  • Patent number: 8221265
    Abstract: A golf ball including an inner core layer having an Atti compression of 30 or less and formed from a first rubber composition and having a first surface hardness; an outer core layer including a second rubber composition; a thermoplastic layer having a second surface hardness, an inner surface hardness, and comprising a copolymer of ethylene and an ?,?-unsaturated carboxylic acid, and sufficient amount of an organic acid or a salt of the organic acid and a cation source to neutralize the acid groups of the copolymer by about 80% or greater; an inner cover layer having a hardness of about 40 Shore D to 70 Shore D; and an outer cover layer. The first surface hardness is less than the second surface hardness by at least 5 Shore C.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: July 17, 2012
    Assignee: Acushnet Company
    Inventors: Murali Rajagopalan, Michael J. Sullivan
  • Patent number: 8187121
    Abstract: This invention is related to multi-layer golf balls having at least one layer containing a neutralized high acid ionomer linked to a grafted metallocene copolymer, where the golf balls exhibit improved performance characteristics and properties.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: May 29, 2012
    Assignee: Acushnet Company
    Inventors: Murali Rajagopalan, Kevin M. Harris, Michael J. Sullivan, Douglas E. Jones, Derek A. Ladd, Scott Cooper
  • Publication number: 20120122608
    Abstract: Disclosed herein are soft and stiff compositions, i.e., compositions which have a flexural modulus that is greater than the value that is expected based on the composition's hardness. The compositions preferably have a hardness/modulus relationship represented by the formula H?11.889 Ln(M)+42, where H is the hardness of the composition, in JIS-C, and M is the flexural modulus of the composition, in ksi; or a softness/stiffness relationship represented by the formula if M<56, then H?8.5218 Ln(M)+26.5 if M?56, then H?8.5218 Ln(M)+28.5, where H is the hardness of the composition, in Shore D, and M is the flexural modulus of the composition, in ksi. The compositions preferably comprise an ionomer and a functionalized elastomer.
    Type: Application
    Filed: September 8, 2011
    Publication date: May 17, 2012
    Inventors: David A. Bulpett, Michael J. Sullivan, Robert Blink, Mark L. Binette, Brian Comeau, Murali Rajagopalan
  • Publication number: 20120122612
    Abstract: A golf ball includes a core having a diameter, a first Shore D hardness and a compression; and a cover having a second Shore D hardness that is at least 5 points less than the first Shore D hardness. The cover includes an ionomer of an alternate copolymer, the alternate copolymer being formed from the reaction product of a copolymer of ethylene and maleic anhydride monomer in the presence of a suitable base, the maleic anhydride monomer being present in an amount of about 78 wt %.
    Type: Application
    Filed: November 12, 2010
    Publication date: May 17, 2012
    Inventors: Murali Rajagopalan, Michael J. Sullivan
  • Patent number: 8177666
    Abstract: This invention is related to multi-layer golf balls having at least one layer containing a neutralized high acid ionomer linked to a grafted metallocene copolymer, where the golf balls exhibit improved performance characteristics and properties.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: May 15, 2012
    Assignee: Acushnet Company
    Inventors: Murali Rajagopalan, Kevin M. Harris, Michael J. Sullivan, Douglas E. Jones, Derek A. Ladd, Scott Cooper