Patents by Inventor Nathan A. Hammond

Nathan A. Hammond 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: 20230109067
    Abstract: Disclosed is a process of adding PUF materials with non-repeatable random order to the additive manufacturing process of a product. Preferably, these materials have magnetic characteristics. These characteristics can be detected by a sensor which reads the random pattern and provides a unique signature for the item produced.
    Type: Application
    Filed: December 9, 2022
    Publication date: April 6, 2023
    Inventors: James Paul Drummond, Cory Nathan Hammond, Kelly Ann Killeen, Gary Allen Denton
  • Publication number: 20220187726
    Abstract: The present disclosure relates to a polyester chemically produced toner composition including a core shell toner particle having special surface features and method to make the same. The special surface features on the outer surface of the core shell toner particle are created by the incorporation of a specially designed polymer latex having styrene and acrylate monomers into the core or shell of the toner particle wherein the polymer latex having styrene and acrylate monomers is tailored to be incompatible with the polyester resin(s) found in the core or the shell of the toner particle.
    Type: Application
    Filed: December 16, 2020
    Publication date: June 16, 2022
    Inventors: JING X. SUN, QING ZHANG, BENJAMIN KEITH NEWMAN, CORY NATHAN HAMMOND, LIGIA AURA BEJAT
  • Publication number: 20220187724
    Abstract: The present disclosure relates to a polyester chemically produced toner composition including a core shell toner particle having special surface features and method to make the same. The special surface features on the outer surface of the core shell toner particle are created by the incorporation of a specially designed polymer latex having styrene and acrylate monomers into the core or shell of the toner particle wherein the polymer latex having styrene and acrylate monomers is tailored to be incompatible with the polyester resin(s) found in the core or the shell of the toner particle.
    Type: Application
    Filed: December 16, 2020
    Publication date: June 16, 2022
    Inventors: JING X. SUN, QING ZHANG, BENJAMIN KEITH NEWMAN, CORY NATHAN HAMMOND, LIGIA AURA BEJAT
  • Publication number: 20220187723
    Abstract: The present disclosure relates to a polyester chemically produced toner composition including a core shell toner particle having special surface features and method to make the same. The special surface features on the outer surface of the core shell toner particle are created by the incorporation of a specially designed polymer latex having styrene and acrylate monomers into the core or shell of the toner particle wherein the polymer latex having styrene and acrylate monomers is tailored to be incompatible with the polyester resin(s) found in the core or the shell of the toner particle.
    Type: Application
    Filed: December 16, 2020
    Publication date: June 16, 2022
    Inventors: JING X SUN, QING ZHANG, BENJAMIN KEITH NEWMAN, CORY NATHAN HAMMOND, LIGIA AURA BEJAT
  • Publication number: 20220187727
    Abstract: The present disclosure relates to a polyester chemically produced toner composition including a core shell toner particle having special surface features and method to make the same. The special surface features on the outer surface of the core shell toner particle are created by the incorporation of a specially designed latex having styrene and acrylate monomers into the core of the toner particle wherein the latex in the core is tailored to be incompatible with the polyester resin(s) found in the core of the toner particle. The final ratio of the monomers in the latex to the surfactant in the latex is approximately 1:5. This ratio is key in maintaining a stable dispersion and is influenced by the particle size in the dispersion and surfactant chemistries.
    Type: Application
    Filed: December 15, 2021
    Publication date: June 16, 2022
    Inventors: JING X SUN, QING ZHANG, BENJAMIN KEITH NEWMAN, CORY NATHAN HAMMOND, LIGIA AURA BEJAT
  • Publication number: 20200333719
    Abstract: A method to make a chemically prepared crystalline polyester toner for use in electrophotography and more particularly to a method to make a multilayered crystalline polyester toner particle using a dual emulsion aggregation process. The dual emulsion aggregation process includes a first agglomeration step using an acid and a second agglomeration step using a soluble alkaline earth metal salt solution.
    Type: Application
    Filed: July 1, 2020
    Publication date: October 22, 2020
    Inventors: JING X. SUN, CORY NATHAN HAMMOND, AARON MICHAEL DAHLKE
  • Publication number: 20200298468
    Abstract: Disclosed is a process of adding PUF materials with non-repeatable random order to the additive manufacturing process of a product. Preferably, these materials have magnetic characteristics. These characteristics can be detected by a sensor which reads the random pattern and provides a unique signature for the item produced.
    Type: Application
    Filed: March 17, 2020
    Publication date: September 24, 2020
    Inventors: James Paul Drummond, Cory Nathan Hammond, Kelly Ann Killeen, Gary Allen Denton
  • Publication number: 20200110345
    Abstract: A method to make a chemically prepared crystalline polyester toner for use in electrophotography and more particularly to a method to make a multilayered crystalline polyester toner particle using a dual emulsion aggregation process. The dual emulsion aggregation process includes a first agglomeration step using an acid and a second agglomeration step using a soluble alkaline earth metal salt solution.
    Type: Application
    Filed: October 5, 2018
    Publication date: April 9, 2020
    Inventors: JING X SUN, CORY NATHAN HAMMOND, AARON MICHAEL DAHLKE
  • Publication number: 20200110346
    Abstract: A method to make a chemically prepared crystalline polyester toner for use in electrophotography and more particularly to a method to make a multilayered crystalline polyester toner particle using a dual emulsion aggregation process. The dual emulsion aggregation process includes a first agglomeration step using an acid and a second agglomeration step using a soluble alkaline earth metal salt solution.
    Type: Application
    Filed: October 5, 2018
    Publication date: April 9, 2020
    Inventors: JING X. SUN, CORY NATHAN HAMMOND, AARON MICHAEL DAHLKE
  • Patent number: 10495998
    Abstract: A chemically prepared multilayered toner composition, according to one example embodiment, includes a core having a first amorphous polyester resin, a second amorphous polyester resin, a colorant, and a release agent. A first layer is formed around the core wherein the first layer includes the same second amorphous polyester resin that is in the toner core. A second layer is formed on the surface of the first layer, wherein the second layer includes a third amorphous polyester resin. A borax coupling agent is between the first and second layers. In an embodiment the ratio of the second polymer in the core to second polymer in the first layer is about 50:50. The second layer can also be referred to as a shell that is formed over the toner particle having a center core, first layer and borax coupling agent. In another embodiment, the core does not contain a second amorphous polyester resin.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: December 3, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Jing X Sun, Corey Marcus Moran, Cory Nathan Hammond, Aaron Michael Dahlke
  • Patent number: 10495999
    Abstract: A chemically prepared multilayered toner composition, according to one example embodiment, includes a core having a first amorphous polyester resin, a second amorphous polyester resin, a colorant, and a release agent. A first layer is formed around the core wherein the first layer includes the same second amorphous polyester resin that is in the toner core. A second layer is formed on the surface of the first layer, wherein the second layer includes a third amorphous polyester resin. A borax coupling agent is between the first and second layers. In an embodiment the ratio of the second polymer in the core to second polymer in the first layer is about 50:50. The second layer can also be referred to as a shell that is formed over the toner particle having a center core, first layer and borax coupling agent. In another embodiment, the core does not contain a second amorphous polyester resin.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: December 3, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Jing X Sun, Corey Marcus Moran, Cory Nathan Hammond, Aaron Michael Dahlke
  • Publication number: 20190302634
    Abstract: A chemically prepared multilayered toner composition, according to one example embodiment, includes a core having a first amorphous polyester resin, a second amorphous polyester resin, a colorant, and a release agent. A first layer is formed around the core wherein the first layer includes the same second amorphous polyester resin that is in the toner core. A second layer is formed on the surface of the first layer, wherein the second layer includes a third amorphous polyester resin. A borax coupling agent is between the first and second layers. In an embodiment the ratio of the second polymer in the core to second polymer in the first layer is about 50:50. The second layer can also be referred to as a shell that is formed over the toner particle having a center core, first layer and borax coupling agent. In another embodiment, the core does not contain a second amorphous polyester resin.
    Type: Application
    Filed: December 6, 2018
    Publication date: October 3, 2019
    Inventors: JING X. SUN, COREY MARCUS MORAN, CORY NATHAN HAMMOND, AARON MICHAEL DAHLKE
  • Publication number: 20190302635
    Abstract: A chemically prepared multilayered toner composition, according to one example embodiment, includes a core having a first amorphous polyester resin, a second amorphous polyester resin, a colorant, and a release agent. A first layer is formed around the core wherein the first layer includes the same second amorphous polyester resin that is in the toner core. A second layer is formed on the surface of the first layer, wherein the second layer includes a third amorphous polyester resin. A borax coupling agent is between the first and second layers. In an embodiment the ratio of the second polymer in the core to second polymer in the first layer is about 50:50. The second layer can also be referred to as a shell that is formed over the toner particle having a center core, first layer and borax coupling agent. In another embodiment, the core does not contain a second amorphous polyester resin.
    Type: Application
    Filed: December 6, 2018
    Publication date: October 3, 2019
    Inventors: JING X SUN, COREY MARCUS MORAN, CORY NATHAN HAMMOND, AARON MICHAEL DAHLKE
  • Patent number: 10180634
    Abstract: A chemically prepared multilayered toner composition, according to one example embodiment, includes a core having a first polymer binder, a second polymer binder, a colorant, and a release agent. A first layer is formed around the core wherein the first layer includes the same second polymer binder that is in the toner core. A second layer is formed on the surface of the first layer, wherein the second layer includes a third polymer binder. A borax coupling agent is between the first and second layers. In an embodiment the ratio of the second polymer in the core to second polymer in the first layer is about 50:50. The second layer can also be referred to as a shell that is formed over the toner particle having a center core, first layer and borax coupling agent. In another embodiment, the core does not contain a second polymer binder.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: January 15, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Jing X Sun, Corey Marcus Moran, Cory Nathan Hammond, Aaron Michael Dahlke
  • Patent number: 10133202
    Abstract: A chemically prepared toner composition according to one example embodiment includes a core including a first polymer binder, a colorant and a release agent; a shell that is formed around the core that includes a second polymer binder; and a borax coupling agent between the core and the shell and an alkoxysilane hydrocarbon or combination of different alkoxysilane hydrocarbons that are bonded to the outer surface of the shell using a hydrolytic deposition process. This successful alkoxysilane hydrocarbon surface treatment on the outer surface of the toner particle results in attaining a desirable charge stability in hot and humid environments and ultimately improving the quality of the toner, especially by reducing toner dusting, toner fuming and ultra-fine particles generation.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: November 20, 2018
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Danielle Renee Ashley, Ligia Aura Bejat, Michael James Bensing, Ashley Schafer Grant, Cory Nathan Hammond, Rick Owen Jones, John Joseph Kraseski, Jing X Sun
  • Patent number: 10133203
    Abstract: A method for producing core shell toner for electrophotography according to one embodiment, includes surface treating the outer surface of a core shell toner particle with a alkoxysilane hydrocarbon or combination of different alkoxysilane hydrocarbons using a hydrolytic deposition process after the core shell toner particle is fully formed. This method results in the bonding of the alkoxysilane hydrocarbon or combination of different alkoxysilane hydrocarbons to the outer surface of the core shell toner particle. In an alternative method, the outer surface of the toner is surface treated with the alkoxysilane hydrocarbon solution and then fused to form toner particles. The alkoxysilane hydrocarbon surface treated core shell toner also can be mixed with magnetic carrier beads to form a developer mix to be used in a dual component development electrophotographic printer.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: November 20, 2018
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Danielle Renee Ashley, Ligia Aura Bejat, Michael James Bensing, Ashley Schafer Grant, Cory Nathan Hammond, Rick Owen Jones, John Joseph Kraseski, Jing X Sun
  • Patent number: 10108101
    Abstract: The present disclosure relates to a chemically prepared toner composition including a toner particle having a core including a first polymer binder, an styrene acrylate encapsulated crystalline polyester latex, a pigment, and a shell formed around the core including a second polymer binder and method to make the same. The disclosed method of preparing the toner results in a change in the distribution of the components of the toner particle wherein the lower molecular weight resins, the pigment and the wax are located away from the surface of the toner particle and the pigment is clinging to the edge of the wax domain.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: October 23, 2018
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Jing X Sun, Cory Nathan Hammond
  • Patent number: 10048609
    Abstract: A chemically prepared core shell toner formulation for use in electrophotography having an inventive softening agent consisting of a core shell latex having an encapsulated interpenetrating polymer network microgel in the core of the toner is disclosed. Having this core shell latex with an encapsulated IPN microgel in the core of the toner results in a toner that can simultaneously fuse at a desirable low temperature and survive the temperature extremes associated with shipping and storage.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: August 14, 2018
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Jing X Sun, Cory Nathan Hammond, Jacob Gordon Flora
  • Publication number: 20180143554
    Abstract: A chemically prepared toner composition according to one example embodiment includes a core including a first polymer binder, a colorant and a release agent; a shell that is formed around the core that includes a second polymer binder; and a borax coupling agent between the core and the shell and an alkoxysilane hydrocarbon or combination of different alkoxysilane hydrocarbons that are bonded to the outer surface of the shell using a hydrolytic deposition process.
    Type: Application
    Filed: January 17, 2018
    Publication date: May 24, 2018
    Inventors: DANIELLE RENEE ASHLEY, LIGIA AURA BEJAT, MICHAEL JAMES BENSING, ASHLEY SCHAFER GRANT, CORY NATHAN HAMMOND, RICK OWEN JONES, JOHN JOSEPH KRASESKI, JING X SUN
  • Publication number: 20180143556
    Abstract: A method for producing core shell toner for electrophotography according to one embodiment, includes surface treating the outer surface of a core shell toner particle with a alkoxysilane hydrocarbon or combination of different alkoxysilane hydrocarbons using a hydrolytic deposition process after the core shell toner particle is fully formed. This method results in the bonding of the alkoxysilane hydrocarbon or combination of different alkoxysilane hydrocarbons to the outer surface of the core shell toner particle. In an alternative method, the outer surface of the toner is surface treated with the alkoxysilane hydrocarbon solution and then fused to form toner particles. The alkoxysilane hydrocarbon surface treated core shell toner also can be mixed with magnetic carrier beads to form a developer mix to be used in a dual component development electrophotographic printer.
    Type: Application
    Filed: January 17, 2018
    Publication date: May 24, 2018
    Inventors: DANIELLE RENEE ASHLEY, LIGIA AURA BEJAT, MICHAEL JAMES BENSING, ASHLEY SCHAFER GRANT, CORY NATHAN HAMMOND, RICK OWEN JONES, JOHN JOSEPH KRASESKI, JING X. SUN