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).

  • Patent number: 7888448
    Abstract: The present invention is directed to a method of forming a golf ball that contains an interpenetrating polymer network, or IPN, which includes at least two polymeric systems, in one or more of the layers. The first polymeric system may include a polyurethane-based or polyurea-based system having blocked isocyanate groups and the second polymeric system may include an epoxy-based or acrylic-based system, wherein the two systems are polymerized or cured simultaneously or sequentially to form an IPN.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: February 15, 2011
    Assignee: Acushnet Company
    Inventors: Manjari Kuntimaddi, Shenshen Wu, Murali Rajagopalan
  • Patent number: 7888449
    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: January 19, 2010
    Date of Patent: February 15, 2011
    Assignee: Acushnet Company
    Inventors: Shenshen Wu, Kelly J. Gasper, Constantine A. Kondos, Murali Rajagopalan
  • Patent number: 7867106
    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: February 27, 2009
    Date of Patent: January 11, 2011
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Derek A. Ladd, Edmund A. Hebert, Murali Rajagopalan
  • Publication number: 20100317463
    Abstract: Golf balls having a core and containing at least one surrounding layer made from a functionalized ethylene copolymer having a linear or substantially linear structure are provided. The core may be made of a polybutadiene rubber material. The functionalized ethylene copolymer composition may be used to form any layer in the golf ball structure such as, for example, an outer core, intermediate layer, inner cover, and/or outer cover. The composition may be blended with ionomeric or non-ionomeric resins such as polyamides, polyurethanes, polyureas, polycarbonates, polyesters, and polyacrylates to form the layer. The resulting layers provide the golf ball with improved resiliency and impact durability.
    Type: Application
    Filed: June 12, 2009
    Publication date: December 16, 2010
    Inventors: Michael J. Sullivan, Murali Rajagopalan
  • Publication number: 20100317462
    Abstract: The present invention is directed to compositions and methods relating to golf balls. In one embodiment, a golf ball can include a core and/or intermediate layer formed from a partially-neutralized in situ ionomer that is neutralized to a first level by a first cation, and is subsequently neutralized by a second, different cation to produce a further, more highly-neutralized ionomer. The further-neutralized ionomer exhibits decreased compression (softer) and/or increased COR (faster) compared to a comparative golf ball that contains a core or layer that is formed from an ionomer that is not subsequently neutralized with a second cation.
    Type: Application
    Filed: June 10, 2009
    Publication date: December 16, 2010
    Inventors: Murali Rajagopalan, Michael J. Sullivan
  • Patent number: 7851561
    Abstract: The present invention is directed to a method of forming a golf ball that contains an interpenetrating polymer network, or IPN, which includes at least two polymeric systems, in one or more of the layers. The first polymeric system may include a polyurethane-based or polyurea-based system having blocked isocyanate groups and the second polymeric system may include an epoxy-based or acrylic-based system, wherein the two systems are polymerized or cured simultaneously or sequentially to form an IPN.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: December 14, 2010
    Assignee: Acushnet Company
    Inventors: Manjari Kuntimaddi, Shenshen Wu, Murali Rajagopalan
  • Publication number: 20100304892
    Abstract: Golf equipment having improved cut and shear resistance that includes a polyurea composition, preferably saturated and/or water resistant, formed of a polyurea prepolymer and a curing agent, wherein the polyurea prepolymer includes an isocyanate and an amine-terminated compound, and wherein the curing agent includes a hydroxy-terminated curing agent, amine-terminated curing agent, or a mixture thereof.
    Type: Application
    Filed: August 4, 2010
    Publication date: December 2, 2010
    Applicant: Acushnet Company
    Inventors: Shenshen Wu, David A. Bulpett, Murali Rajagopalan
  • Publication number: 20100255934
    Abstract: The present invention is directed to golf balls having at least one layer formed from a polyurea composition. The polyurea is formed by combining an aliphatic polyurea prepolymer, a diamine curative, and a cyclic carbonate diluent. Golf balls of the present invention include one-piece, two-piece, multi-layer, and wound golf balls. The composition may be present in any one or more of a core layer, a cover layer, or an intermediate layer.
    Type: Application
    Filed: March 26, 2010
    Publication date: October 7, 2010
    Inventors: Murali Rajagopalan, Manjari Kuntimaddi, Shenshen Wu, Shawn Ricci, Kevin M. Harris
  • Publication number: 20100255936
    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: Application
    Filed: June 21, 2010
    Publication date: October 7, 2010
    Inventors: Brian Comeau, David A. Bulpett, Kevin M. Harris, Murali Rajagopalan
  • Publication number: 20100240468
    Abstract: A golf ball comprising a core and a cover layer surrounding the core, where at least one of the core and the cover layer includes a polymer composition of a highly neutralized acid polymer and a sugar ester HLB modifier such that the sugar ester HLB modifier is present from about 15 wt % to about 40 wt % of the polymer composition.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 23, 2010
    Inventors: Murali Rajagopalan, Michael J. Sullivan
  • Publication number: 20100240469
    Abstract: The present invention is directed to golf balls having at least one layer formed from a polyurea composition. The polyurea is formed by combining a polyurea prepolymer, a polyamine curative, and a tin catalyst. Golf balls of the present invention include one-piece, two-piece, multi-layer, and wound golf balls. The composition may be present in any one or more of a core layer, a cover layer, or an intermediate layer.
    Type: Application
    Filed: June 3, 2010
    Publication date: September 23, 2010
    Inventors: Murali Rajagopalan, Shawn Ricci, Manjari Kuntimaddi, Shenshen Wu
  • Patent number: 7786212
    Abstract: Polyurethane and polyurea compositions for golf balls with improved stability of the curative blend, wherein the curative blend 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: January 23, 2007
    Date of Patent: August 31, 2010
    Assignee: Acushnet Company
    Inventors: Shenshen Wu, Kelly J. Gasper, Constantine A. Kondos, Murali Rajagopalan
  • Patent number: 7786243
    Abstract: Golf equipment having improved cut and shear resistance that includes a polyurea composition, preferably saturated and/or water resistant, formed of a polyurea prepolymer and a curing agent, wherein the polyurea prepolymer includes an isocyanate and an amine-terminated compound, and wherein the curing agent includes a hydroxy-terminated curing agent, amine-terminated curing agent, or a mixture thereof.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: August 31, 2010
    Assignee: Acushnet Company
    Inventors: Shenshen Wu, David A. Bulpett, Murali Rajagopalan
  • Patent number: 7772354
    Abstract: Polyurethane-based and polyurea-based compositions including modified amine curing agents for use in golf ball layers where modified amine curing agent of the invention allows control of the reaction rate by providing a composition with both primary and secondary amine linkages.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: August 10, 2010
    Assignee: Acushnet Company
    Inventors: Shenshen Wu, Manjari Kuntimaddi, Shawn Ricci, Kevin M. Harris, Murali Rajagopalan
  • Patent number: 7766768
    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: October 26, 2009
    Date of Patent: August 3, 2010
    Assignee: Acushnet Company
    Inventors: Michael J. Sullivan, Derek A. Ladd, Edmund A. Hebert, Murali Rajagopalan
  • Publication number: 20100190578
    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: Application
    Filed: January 29, 2009
    Publication date: July 29, 2010
    Inventors: Murali Rajagopalan, Kevin M. Harris, Michael J. Sullivan, Douglas E. Jones, Derek A. Ladd, Scott Cooper
  • Publication number: 20100190576
    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: Application
    Filed: January 29, 2009
    Publication date: July 29, 2010
    Inventors: Murali Rajagopalan, Kevin M. Harris, Michael J. Sullivan, Douglas E. Jones, Derek A. Ladd, Scott Cooper
  • Publication number: 20100190577
    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: Application
    Filed: January 29, 2009
    Publication date: July 29, 2010
    Inventors: Murali Rajagopalan, Kevin M. Harris, Michael J. Sullivan, Douglas E. Jones, Derek A. Ladd, Scott Cooper
  • Publication number: 20100190582
    Abstract: A golf ball having a cover having a pearlescent effect is disclosed. The cover comprises a first thermoplastic and a second thermoplastic having an index of refraction that differs from an index of refraction of the first thermoplastic by at least about 0.5 percent. The cover further comprises a compatibilizer.
    Type: Application
    Filed: January 26, 2009
    Publication date: July 29, 2010
    Inventors: Edmund A. Hebert, Murali Rajagopalan
  • Publication number: 20100190579
    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: Application
    Filed: January 29, 2009
    Publication date: July 29, 2010
    Inventors: Murali Rajagopalan, Kevin M. Harris, Michael J. Sullivan, Douglas E. Jones, Derek A. Ladd, Scott Cooper