Patents by Inventor David Bartels

David Bartels 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: 11058922
    Abstract: A golf ball comprising a core composed of a fully neutralized polymer material is disclosed herein. The golf ball also preferably has multiple mantle layers and a cover.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: July 13, 2021
    Assignee: Callaway Golf Company
    Inventors: Steve Ogg, David Bartels
  • Publication number: 20210162265
    Abstract: A golf ball with a core comprising polybutadiene and graphene is disclosed herein. The golf ball has a single core comprising polybutadiene and graphene. Alternatively, the golf ball has a dual core with an inner core comprising polybutadiene and graphene. Alternatively, the golf ball has a dual core with an outer core comprising polybutadiene and graphene.
    Type: Application
    Filed: January 25, 2021
    Publication date: June 3, 2021
    Applicant: Callaway Golf Company
    Inventors: Vijay Chavan, David Bartels
  • Publication number: 20210130819
    Abstract: Methods and compositions for increasing RNAi efficiency through single nucleotide mismatches.
    Type: Application
    Filed: April 27, 2017
    Publication date: May 6, 2021
    Inventors: Grace Chen, David Bartel, Hazel Sive
  • Patent number: 10918929
    Abstract: A golf ball comprising an electrical component is disclosed herein. The electrical component comprises an integrated circuit having a gyroscope, a magnetometer, and a BLUETOOTH low energy (BTLE) radio, and at least one battery. A body is composed of an epoxy material, and the body encompasses the electrical component.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: February 16, 2021
    Assignee: Callaway Golf Company
    Inventors: Mario Raposo, David Bartels, Petra Petrich, Grady Crahan, Nick Lannes
  • Publication number: 20210040797
    Abstract: A drive shaft assembly for use with downhole mud motors is capable of handling greater torque and thrust forces. The drive shaft assembly has an elongated central drive shaft, and at least one end housing optionally disposed at one or both ends of the central drive shaft. At least one end of the central drive shaft defines a rounded or partially-spherical outer end surface and a plurality of elongate protrusions or “keys” that extend radially outward from the exterior surface of the shaft. Each end housing has a concave interior surface defining a seat for receiving a rounded end surface of the central drive shaft, as well as a plurality of circumferentially spaced axial keyways adapted to receive and engage with the keys in mating relationship. The shaft and end assemblies cooperate to facilitate omnidirectional pivotal movement and the transfer of torque forces between the shaft and each of said end housings.
    Type: Application
    Filed: August 5, 2020
    Publication date: February 11, 2021
    Inventors: RISHI GURJAR, DAVID BARTELS
  • Patent number: 10898762
    Abstract: A golf ball with a core comprising polybutadiene and graphene is disclosed herein. The golf ball has a single core comprising polybutadiene and graphene. Alternatively, the golf ball has a dual core with an inner core comprising polybutadiene and graphene. Alternatively, the golf ball has a dual core with an outer core comprising polybutadiene and graphene.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: January 26, 2021
    Assignee: Callaway Golf Company
    Inventors: Vijay Chavan, David Bartels
  • Patent number: 10888739
    Abstract: A golf ball with improved durability is disclosed herein. The golf ball has a core comprising a polybutadiene material and methyl methacrylate, butadiene, styrene (MBS) with a weight percentage of MBS ranging from 0.5 to 5 weight percent of the core.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: January 12, 2021
    Assignee: Callaway Golf Company
    Inventors: Armando Becerra, Carl Brown, David Bartels, Vijay Chavan
  • Publication number: 20200406106
    Abstract: A golf ball with a core comprising polybutadiene and graphene is disclosed herein. The golf ball has a single core comprising polybutadiene and graphene. Alternatively, the golf ball has a dual core with an inner core comprising polybutadiene and graphene. Alternatively, the golf ball has a dual core with an outer core comprising polybutadiene and graphene.
    Type: Application
    Filed: July 29, 2020
    Publication date: December 31, 2020
    Applicant: Callaway Golf Company
    Inventors: Vijay Chavan, David Bartels
  • Publication number: 20200376346
    Abstract: A golf ball with a core comprising polybutadiene and graphene, and a soft cover is disclosed herein. The golf ball has a dual core with an outer core comprising polybutadiene and graphene. The soft cover is preferably composed of a highly neutralized polymer, a first ionomer, a second ionomer, and an impact modifier.
    Type: Application
    Filed: April 10, 2020
    Publication date: December 3, 2020
    Applicant: Callaway Golf Company
    Inventors: Petra Petrich, David Bartels, Hong G. Jeon, Carl Brown
  • Patent number: 10828535
    Abstract: A method for forming a golf ball with a graphene core disclosed herein. The method includes mixing a graphene masterbatch material with a polybutadiene material to form a core mixture, wherein the graphene masterbatch material comprises graphene in an amount from 0.1 to 80.0 weight percent of the graphene masterbatch material mixed with a carrier polymer in an amount from 99.9 to 20 weight percent of the graphene masterbatch material.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: November 10, 2020
    Assignee: Callaway Golf Company
    Inventors: Vijay Chavan, David Bartels
  • Patent number: 10821330
    Abstract: A golf ball with a core comprising polybutadiene and graphene with an embedded IC is disclosed herein. The golf ball preferably has a single core comprising polybutadiene and graphene. Alternatively, the golf ball has a dual core with an inner core comprising polybutadiene and graphene. Alternatively, the golf ball has a dual core with an outer core comprising polybutadiene and graphene.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: November 3, 2020
    Assignee: Callaway Golf Company
    Inventors: Vincent Simonds, David Bartels, Vijay Chavan
  • Patent number: D921135
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: June 1, 2021
    Assignee: Callaway Golf Company
    Inventors: David Bartels, Alan Hocknell, Petra Petrich
  • Patent number: D921136
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: June 1, 2021
    Assignee: Callaway Golf Company
    Inventors: David Bartels, Alan Hocknell, Petra Petrich
  • Patent number: D921779
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: June 8, 2021
    Assignee: Callaway Golf Company
    Inventors: David Bartels, Alan Hocknell, Petra Petrich
  • Patent number: D921780
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: June 8, 2021
    Assignee: Callaway Golf Company
    Inventors: David Bartels, Alan Hocknell, Petra Petrich
  • Patent number: D921781
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: June 8, 2021
    Assignee: Callaway Golf Company
    Inventors: David Bartels, Alan Hocknell, Petra Petrich
  • Patent number: D921782
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: June 8, 2021
    Assignee: Callaway Golf Company
    Inventors: David Bartels, Alan Hocknell, Petra Petrich
  • Patent number: D924344
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: July 6, 2021
    Assignee: Callaway Golf Company
    Inventors: David Bartels, Alan Hocknell, Petra Petrich
  • Patent number: D927617
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: August 10, 2021
    Assignee: Callaway Golf Company
    Inventors: Alan Hocknell, David Bartels, Petra Petrich
  • Patent number: D927618
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: August 10, 2021
    Assignee: Callaway Golf Company
    Inventors: Alan Hocknell, David Bartels, Petra Petrich