Patents by Inventor Michael John Tzivanis

Michael John Tzivanis 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: 11142736
    Abstract: The invention describes a gas permeable fluoropolymer and silicone material used in the construction of cell culture bags.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: October 12, 2021
    Assignee: Saint-Gobain Performance Plastics Corporation
    Inventors: Sarah Louise Clark, Natasha Anna Lundgren, Michael John Tzivanis, Aijun Zhu
  • Publication number: 20200339927
    Abstract: The invention describes a gas permeable fluoropolymer and silicone material used in the construction of cell culture bags.
    Type: Application
    Filed: July 14, 2020
    Publication date: October 29, 2020
    Inventors: Sarah Louise Clark, Natasha Anna Lundgren, Michael John Tzivanis, Aijun Zhu
  • Patent number: 10711235
    Abstract: The invention describes a gas permeable fluoropolymer and silicone material used in the construction of cell culture bags.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: July 14, 2020
    Assignee: Saint-Gobain Performance Plastics Corporation
    Inventors: Sarah Louise Clark, Natasha Anna Lundgren, Michael John Tzivanis, Aijun Zhu
  • Publication number: 20180312793
    Abstract: The invention describes a gas permeable fluoropolymer and silicone material used in the construction of cell culture bags.
    Type: Application
    Filed: March 27, 2018
    Publication date: November 1, 2018
    Inventors: Sarah Louise Clark, Natasha Anna Lundgren, Michael John Tzivanis, Aijun Zhu
  • Patent number: 9926524
    Abstract: The invention describes a gas permeable fluoropolymer and silicone material used in the construction of cell culture bags.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 27, 2018
    Assignee: Saint-Gobain Performance Plastics Corporation
    Inventors: Sarah Louise Clark, Natasha Anna Lundgren, Michael John Tzivanis, Aijun Zhu
  • Publication number: 20160177247
    Abstract: The invention describes a gas permeable fluoropolymer and silicone material used in the construction of cell culture bags.
    Type: Application
    Filed: December 21, 2015
    Publication date: June 23, 2016
    Inventors: Sarah Louise Clark, Natasha Anna Lundgren, Michael John Tzivanis, Aijun Zhu
  • Patent number: 7241232
    Abstract: The present invention is directed to a golf ball comprising a dual core component, an inner cover layer and an outer cover layer. The dual core comprises an interior spherical center component formed from a thermoset material, a thermoplastic material, or combinations thereof. The dual core also comprises a core layer disposed about the center component, formed from a thermoset material, a thermoplastic material, or combinations thereof. The one or more polyurethane layers are preferably formed via a reaction injection molding (RIM) technique. The inner cover layer is relatively soft and preferably comprises an ionomer or ionomer blend. The outer cover layer is relatively hard and comprises a hard polyurethane. The resulting multi-layered golf ball of the present invention provides for enhanced distance without sacrificing playability or durability when compared to known multi-layer golf balls.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: July 10, 2007
    Assignee: Callaway Golf Company
    Inventors: Michael J. Sullivan, R. Dennis Nesbitt, Thomas J. Kennedy, III, Michael John Tzivanis, Mark L. Binette, Viktor Keller, William M. Risen, Jr.
  • Patent number: 7182701
    Abstract: Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has a core, one or more mantle or inner cover layers with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 53 or less. In a particularly preferred form of the invention, the inner and/or outer cover layers comprise a reaction injection molded polyurethane. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less and, particularly, 40 yards or less, while maintaining good distance and average spin on full shots.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: February 27, 2007
    Assignee: Callaway Golf Company
    Inventors: Viktor Keller, Thomas J. Kennedy, III, William M. Risen, Jr., Michael John Tzivanis, Michael J. Sullivan
  • Patent number: 7140981
    Abstract: The present invention is directed to a golf ball comprising a dual core component, an inner cover layer and an outer cover layer. The dual core comprises an interior spherical center component formed from a thermoset material, a thermoplastic material, or combinations thereof. The dual core also comprises a core layer disposed about the center component, formed from a thermoset material, a thermoplastic material, or combinations thereof. The one or more polyurethane layers are preferably formed via a reaction injection molding (RIM) technique. The inner cover layer is relatively soft and preferably comprises an ionomer or ionomer blend. The outer cover layer is relatively hard and comprises a hard polyurethane. The resulting multi-layered golf ball of the present invention provides for enhanced distance without sacrificing playability or durability when compared to known multi-layer golf balls.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: November 28, 2006
    Assignee: Callaway Golf Company
    Inventors: Michael J. Sullivan, R. Dennis Nesbitt, Thomas J. Kennedy, III, Michael John Tzivanis, Mark L. Binette, Viktor Keller, William M. Risen, Jr.
  • Patent number: 7074138
    Abstract: The present invention is directed to a solid, non-wound, golf ball comprising two or more core components, and a cover component. The core components comprise i) a small, inner, high density, spherical center component comprising a blend of powdered metal and a first matrix material; and, ii) an outer core layer disposed about the spherical center component, formed from a second matrix material. The golf ball may further comprise a second or additional outer core layer(s) that surround the first outer core layer. The cover may be single or multi-layered. For a multi-layered cover, the inner cover layer is comprised of a hard, high modulus material and the outer cover layer is comprised of a soft, very low modulus material and/or a non-ionomeric thermoplastic elastomer such as polyurethane, polyester or polyetheramide. Separately, the inner and/or outer cover layers are very thin in construction. The resulting golf ball of the present invention provides for enhanced playability characteristics (i.e.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: July 11, 2006
    Assignee: Callaway Golf Company
    Inventors: Thomas J. Kennedy, III, Mark L. Binette, Michael John Tzivanis, R. Dennis Nesbitt, John L. Nealon, Vincent J. Simonds
  • Patent number: 6929568
    Abstract: The present invention is directed to a solid, non-wound, golf ball comprising two or more core components, and a cover component. The core components comprise i) a small, inner, high density, spherical center component comprising a blend of powdered metal and a first matrix material selecting from the group consisting of a polybutadiene, a polyisoprene, or combinations thereof; and, ii) an outer core layer disposed about the spherical center component, formed from a second matrix material selected from the group consisting of a thermoset material, a thermoplastic material, or combinations thereof. The golf ball may further comprise a second or additional outer core layer(s) that surround the first outer core layer. The cover may be single or multi-layered.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: August 16, 2005
    Assignee: Callaway Golf Company
    Inventors: R. Dennis Nesbitt, Mark L. Binette, Michael John Tzivanis, John L. Nealon, Thomas J. Kennedy, III, Vincent J. Simonds
  • Patent number: 6905648
    Abstract: The present invention is directed to a golf ball comprising a dual core component, an inner cover layer and an outer cover layer. The dual core comprises an interior spherical center component formed from a thermoset material, a thermoplastic material, or combinations thereof. The dual core also comprises a core layer disposed about the center component, formed from a thermoset material, a thermoplastic material, or combinations thereof. The one or more polyurethane layers are preferably formed via a reaction injection molding (RIM) technique. The inner cover layer is relatively soft and preferably comprises an ionomer or ionomer blend. The outer cover layer is relatively hard and comprises a hard polyurethane. The resulting multi-layered golf ball of the present invention provides for enhanced distance without sacrificing playability or durability when compared to known multi-layer golf balls.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: June 14, 2005
    Assignee: Callaway Golf Company
    Inventors: Michael J. Sullivan, R. Dennis Nesbitt, Thomas J. Kennedy, III, Michael John Tzivanis, Mark L. Binette, Viktor Keller, William M. Risen, Jr.
  • Patent number: 6905424
    Abstract: Disclosed herein is a golf ball comprising one or more fast-chemical-reaction-produced components, such as a component which comprises a reaction injection molded polyurethane material. A process of making a golf ball by forming at least one core and/or cover component of the ball by mixing two or more reactants that react and form a reaction product with a flex modulus of 1 to 310 kpsi, with a setting time of about 30 seconds or less, the component having a thickness of at least 0.01 inches and a mold release time of 2 minutes or less is also disclosed. In one preferred form of the invention, excess polyurethane from forming golf ball covers is recycled by using it to form golf ball cores.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: June 14, 2005
    Assignee: Callaway Golf Company
    Inventors: Thomas J. Kennedy, III, Michael John Tzivanis, Viktor Keller, William Risen
  • Patent number: 6902499
    Abstract: The present invention is directed to a solid, non-wound, golf ball comprising two or more core components, and a cover component. The core components comprise i) a small, inner, high density, spherical center component comprising a blend of powdered metal and a first matrix material; and, ii) an outer core layer disposed about the spherical center component, formed from a second matrix material. The golf ball may further comprise a second or additional outer core layer(s) that surround the first outer core layer. The cover may be single or multi-layered. For a multi-layered cover, the inner cover layer is comprised of a hard, high modulus material and the outer cover layer is comprised of a soft, very low modulus material and/or a non-ionomeric thermoplastic elastomer such as polyurethane, polyester or polyetheramide. Separately, the inner and/or outer cover layers are very thin in construction. The resulting golf ball of the present invention provides for enhanced playability characteristics (i.e.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: June 7, 2005
    Assignee: Calloway Golf Company
    Inventors: Thomas J. Kennedy, III, Mark L. Binette, Michael John Tzivanis, R. Dennis Nesbitt, John L. Nealon, Vincent J. Simonds
  • Patent number: 6824476
    Abstract: A unique set of preferred embodiment golf balls is disclosed as follows. In one aspect, a multi-layer golf ball utilizes a particular blend of ionomers in either or both of the cover layers. Preferably, the blend includes a minor percentage of high acid ionomers with a major percentage of low acid ionomers. In another embodiment, golf balls having relatively thin multi-layer cover assemblies are provided. The thicknesses of these cover layer assemblies range from about 0.015 inches to about 0.045 inches. Also, cover assemblies utilizing one or more thermoplastic polyurethanes are disclosed. The multi-layer core assembly used in the golf balls preferably exhibits a PGA compression of less than 85.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: November 30, 2004
    Assignee: Callaway Golf Company
    Inventors: Michael J. Sullivan, Thomas J. Kennedy, III, Michael John Tzivanis, Mark L. Binette, Viktor Keller, William M. Risen, Jr.
  • Publication number: 20040092337
    Abstract: Disclosed is a process to increase adhesion between two adjacent layers. The process comprises roughening the surface of one layer followed by chlorination of the roughened surface and joining of the layers, or treating the surface of one layer with a silicone-based adhesion promoter and joining the layers. In one preferred embodiment the process comprises roughening the surface of one layer, followed by chlorination of the roughened surface, joining of the layers and post-treatment of the molded layers at an elevated temperature for a predetermined time.
    Type: Application
    Filed: June 24, 2003
    Publication date: May 13, 2004
    Applicant: The Top-Flite Golf Company
    Inventors: Michael John Tzivanis, William M. Risen, Robert A. Weiss, Thomas J. Kennedy, David M. Melanson
  • Publication number: 20040072629
    Abstract: Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has a core, one or more mantle or inner cover layers with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 53 or less. In a particularly preferred form of the invention, the inner and/or outer cover layers comprise a reaction injection molded polyurethane. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less and, particularly, 40 yards or less, while maintaining good distance and average spin on full shots.
    Type: Application
    Filed: November 19, 2003
    Publication date: April 15, 2004
    Applicant: Callaway Golf Company
    Inventors: Viktor M. Keller, Thomas J. Kennedy, William M. Risen, Michael John Tzivanis, Michael J. Sullivan
  • Publication number: 20040067801
    Abstract: The present invention is directed to a solid, non-wound, golf ball comprising two or more core components, and a cover component. The core components comprise i) a small, inner, high density, spherical center component comprising a blend of powdered metal and a first matrix material selecting from the group consisting of a polybutadiene, a polyisoprene, or combinations thereof; and, ii) an outer core layer disposed about the spherical center component, formed from a second matrix material selected from the group consisting of a thermoset material, a thermoplastic material, or combinations thereof. The golf ball may further comprise a second or additional outer core layer(s) that surround the first outer core layer. The cover may be single or multi-layered.
    Type: Application
    Filed: July 14, 2003
    Publication date: April 8, 2004
    Applicant: The Top-Flite Golf Company
    Inventors: R. Dennis Nesbitt, Mark L. Binette, Michael John Tzivanis, John L. Nealon, Thomas J. Kennedy, Vincent J. Simonds
  • Publication number: 20040018894
    Abstract: The present invention is directed to a solid, non-wound, golf ball comprising two or more core components, and a cover component. The core components comprise i) a small, inner, high density, spherical center component comprising a blend of powdered metal and a first matrix material; and, ii) an outer core layer disposed about the spherical center component, formed from a second matrix material. The golf ball may further comprise a second or additional outer core layer(s) that surround the first outer core layer. The cover may be single or multi-layered. For a multi-layered cover, the inner cover layer is comprised of a hard, high modulus material and the outer cover layer is comprised of a soft, very low modulus material and/or a non-ionomeric thermoplastic elastomer such as polyurethane, polyester or polyetheramide. Separately, the inner and/or outer cover layers are very thin in construction. The resulting golf ball of the present invention provides for enhanced playability characteristics (i.e.
    Type: Application
    Filed: July 11, 2003
    Publication date: January 29, 2004
    Applicant: The Top-Flite Golf Company
    Inventors: Thomas J. Kennedy, Mark L. Binette, Michael John Tzivanis, R. Dennis Nesbitt, John L. Nealon, Vincent J. Simonds
  • Patent number: 6663508
    Abstract: Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has a core, one or more mantle or inner cover layers with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 53 or less. In a particularly preferred form of the invention, the inner and/or outer cover layers comprise a reaction injection molded polyurethane. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less and, particularly, 40 yards or less, while maintaining good distance and average spin on full shots.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: December 16, 2003
    Assignee: Callaway Golf Company
    Inventors: Viktor M. Keller, Thomas J. Kennedy, III, William M. Risen, Jr., Michael John Tzivanis, Michael J. Sullivan