Patents by Inventor James Freitag

James Freitag 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: 20240025157
    Abstract: An improved constrained layer vibration dampening patch for use directly on substrates with rust protective coatings. The improved constrained layer vibration dampening patch includes a constraining layer, a dampening layer and a release liner. The improved constrained layer vibration dampening patch includes a dampening layer with about 10 to about 15 weight percent of a butyl rubber composition; about 1 to about 5 weight percent of a tackifier; about 20 to about 25 weight percent of a plasticizer; about 60 to about 65 weight percent of filler; and about 0.01 to 1 weight percent of colorant, wherein the composition is substantially free of a curing agent, and wherein the composition is free of any ethylene copolymers.
    Type: Application
    Filed: November 25, 2021
    Publication date: January 25, 2024
    Applicant: Nitto, Inc.
    Inventors: Lin SONG, James FREITAG, Elvis ENEH, Craig SCHUTZLER, David LEIP
  • Patent number: 11239016
    Abstract: A spin torque oscillator includes a first electrode, a second electrode and a device layer stack located between the first electrode and the second electrode. The device layer stack includes a spin polarization layer including a first ferromagnetic material, an assist layer including a third ferromagnetic material, a ferromagnetic oscillation layer including a second ferromagnetic material located between the spin polarization layer and the assist layer, a nonmagnetic spacer layer located between the spin polarization layer and the ferromagnetic oscillation, and a nonmagnetic coupling layer located between the ferromagnetic oscillation layer and the assist layer. The assist layer is antiferromagnetically coupled to the ferromagnetic oscillation layer through the non-magnetic coupling layer, and the assist layer has a magnetization that is coupled to a magnetization of the ferromagnetic oscillation layer.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: February 1, 2022
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Yuankai Zheng, Zheng Gao, Susumu Okamura, James Freitag
  • Publication number: 20210375518
    Abstract: A spin torque oscillator includes a first electrode, a second electrode and a device layer stack located between the first electrode and the second electrode. The device layer stack includes a spin polarization layer including a first ferromagnetic material, an assist layer including a third ferromagnetic material, a ferromagnetic oscillation layer including a second ferromagnetic material located between the spin polarization layer and the assist layer, a nonmagnetic spacer layer located between the spin polarization layer and the ferromagnetic oscillation, and a nonmagnetic coupling layer located between the ferromagnetic oscillation layer and the assist layer. The assist layer is antiferromagnetically coupled to the ferromagnetic oscillation layer through the non-magnetic coupling layer, and the assist layer has a magnetization that is coupled to a magnetization of the ferromagnetic oscillation layer.
    Type: Application
    Filed: May 29, 2020
    Publication date: December 2, 2021
    Inventors: Yuankai Zheng, Zheng Gao, Susumu Okamura, James Freitag
  • Publication number: 20210376793
    Abstract: A spin torque oscillator includes a first electrode, a second electrode and a device layer stack located between the first electrode and the second electrode. The device layer stack includes a spin polarization layer including a first ferromagnetic material, an assist layer including a third ferromagnetic material, a ferromagnetic oscillation layer including a second ferromagnetic material located between the spin polarization layer and the assist layer, a nonmagnetic spacer layer located between the spin polarization layer and the ferromagnetic oscillation, and a nonmagnetic coupling layer located between the ferromagnetic oscillation layer and the assist layer. The assist layer is antiferromagnetically coupled to the ferromagnetic oscillation layer through the non-magnetic coupling layer, and the assist layer has a magnetization that is coupled to a magnetization of the ferromagnetic oscillation layer.
    Type: Application
    Filed: May 29, 2020
    Publication date: December 2, 2021
    Inventors: Yuankai Zheng, Zheng Gao, Susumu Okamura, James Freitag
  • Patent number: 11171605
    Abstract: A spin torque oscillator includes a first electrode, a second electrode and a device layer stack located between the first electrode and the second electrode. The device layer stack includes a spin polarization layer including a first ferromagnetic material, an assist layer including a third ferromagnetic material, a ferromagnetic oscillation layer including a second ferromagnetic material located between the spin polarization layer and the assist layer, a nonmagnetic spacer layer located between the spin polarization layer and the ferromagnetic oscillation, and a nonmagnetic coupling layer located between the ferromagnetic oscillation layer and the assist layer. The assist layer is antiferromagnetically coupled to the ferromagnetic oscillation layer through the non-magnetic coupling layer, and the assist layer has a magnetization that is coupled to a magnetization of the ferromagnetic oscillation layer.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: November 9, 2021
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Yuankai Zheng, Zheng Gao, Susumu Okamura, James Freitag
  • Patent number: 9831419
    Abstract: A magneto-resistive (MR) device and process for making the MR device are disclosed. The MR device has a pinned layer, a spacer layer proximate to the pinned layer, and a free layer proximate to the spacer layer. The free layer comprises a first magnetic layer proximate to the spacer layer, the first magnetic layer having a positive magnetostriction, a laminate magnetic insertion layer proximate to the first magnetic layer, and a second magnetic layer proximate to the magnetic insertion layer, the second magnetic layer having a negative magnetostriction. The laminate magnetic insertion layer has a first magnetic sublayer and a first non-magnetic sublayer proximate to the first magnetic sublayer. With the disclosed laminate magnetic insertion layer, the free layer has a low overall magnetostriction and results in a MR device with a high MR ratio.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: November 28, 2017
    Assignee: Western Digital Technologies, Inc.
    Inventors: James Freitag, Zheng Gao
  • Patent number: 9570100
    Abstract: A two-dimensional magnetic recording (TDMR) read head with an antiferromagnetic (AFM) layer recessed behind a center shield. The TDMR read head comprises a first read sensor and a center shield over the first read sensor, wherein the center shield has a first thickness at an air-bearing surface (ABS) and a second thickness at a back surface, the first thickness being greater than the second thickness. A ferromagnetic layer is disposed over a portion of the center shield, wherein the ferromagnetic layer is recessed from the ABS. The TDMR read head also includes an antiferromagnetic layer over the ferromagnetic layer and a second read sensor over the antiferromagnetic layer. By recessing the AFM layer away from the ABS, the down-track spacing between read sensors is reduced, thereby improving TDMR read head performance.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: February 14, 2017
    Assignee: Western Digital Technologies, Inc.
    Inventors: James Freitag, Zheng Gao, Stefan Maat
  • Publication number: 20170018703
    Abstract: A magneto-resistive (MR) device and process for making the MR device are disclosed. The MR device has a pinned layer, a spacer layer proximate to the pinned layer, and a free layer proximate to the spacer layer. The free layer comprises a first magnetic layer proximate to the spacer layer, the first magnetic layer having a positive magnetostriction, a laminate magnetic insertion layer proximate to the first magnetic layer, and a second magnetic layer proximate to the magnetic insertion layer, the second magnetic layer having a negative magnetostriction. The laminate magnetic insertion layer has a first magnetic sublayer and a first non-magnetic sublayer proximate to the first magnetic sublayer. With the disclosed laminate magnetic insertion layer, the free layer has a low overall magnetostriction and results in a MR device with a high MR ratio.
    Type: Application
    Filed: July 13, 2015
    Publication date: January 19, 2017
    Applicant: HGST Netherlands B.V.
    Inventors: James FREITAG, Zheng GAO
  • Patent number: 8772076
    Abstract: The present invention provides for new ohmic contact materials and diffusion barriers for Group IBIIIAVIA based solar cell structures, which eliminate two way diffusion while preserving the efficient ohmic contacts between the substrate and the absorber layers.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: July 8, 2014
    Assignee: Solopower Systems, Inc.
    Inventors: Mustafa Pinarbasi, James Freitag, Jorge Vasquez
  • Publication number: 20130061803
    Abstract: The present inventions provide method and apparatus that employ constituents from one or more constituent supply source or sources to form one or more films of a precursor layer formed on a surface of a continuous flexible workpiece. Of particular significance is the implementation of PVD systems that operate upon a horizontally disposed portion of a continuous flexible workpiece and a vertically disposed portion of a continuous flexible workpiece, preferably in conjunction with a short free-span zone of the portion of a continuous flexible workpiece.
    Type: Application
    Filed: August 10, 2012
    Publication date: March 14, 2013
    Applicant: SOLOPOWER, INC.
    Inventors: Jorge Vasquez, James Freitag, Mustafa Pinarbasi
  • Publication number: 20130056059
    Abstract: Described are new ohmic contact materials and diffusion barriers for Group IBIIIAVIA based solar cell structures, which eliminate two way diffusion while preserving the efficient ohmic contacts between the substrate and the absorber layers.
    Type: Application
    Filed: July 3, 2012
    Publication date: March 7, 2013
    Inventors: James Freitag, Mustafa Pinarbasi
  • Patent number: 8318530
    Abstract: Described is a continuous electroless deposition method and a system to form a solar cell buffer layer with a varying composition through its thickness are provided. The composition of the buffer layer is varied by varying the composition of a chemical bath deposition solution applied onto an absorber surface on which the buffer layer with varying composition is formed. In one example, the buffer layer with varying composition includes a first section containing CdS, a second section containing CdZnS formed on top of the already deposited CdS, and a third section containing ZnS is formed on the second section All the process steps are applied in a roll-to-roll fashion. In another example, a transparent conductive layer including a first transparent conductive film such as aluminum doped zinc oxide and a second transparent conductive film such as indium tin oxide is deposited over the buffer layer with the varying composition.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: November 27, 2012
    Assignee: SoloPower, Inc.
    Inventors: Bulent M. Basol, Mustafa Pinarbasi, James Freitag
  • Publication number: 20120247388
    Abstract: The present inventions provide method and apparatus that employ constituents vaporized from one or more constituent supply source or sources to form one or more films of a precursor layer formed on a surface of a continuous flexible workpiece. Of particular significance is the implementation of vapor deposition systems that operate upon a horizontally disposed portion of a continuous flexible workpiece and a vertically disposed portion of a continuous flexible workpiece, preferably in conjunction with a short free-span zone of the portion of a continuous flexible workpiece.
    Type: Application
    Filed: January 3, 2012
    Publication date: October 4, 2012
    Inventors: Jorge Vasquez, James Freitag, Mustafa Pinarbasi
  • Publication number: 20120234314
    Abstract: The present invention provides a reactor for preparing thin films of compound semiconductors for photovoltaic devices. The reactor includes a chamber that has a bottom surface that, in some locations, has protrusions that contact the bottom surface of the substrate having the compound semiconductor to provide uniform heating and cooling of the substrate. Interior walls of the chamber can also be lined with high thermal conductivity portions and low thermal conductivity portions interposed between high thermal conductivity portions.
    Type: Application
    Filed: May 3, 2011
    Publication date: September 20, 2012
    Applicant: SoloPower, Inc.
    Inventors: Howard Zolla, Jorge Vasquez, James Freitag, Mustafa Pinarbasi, Robert J. Bailey
  • Publication number: 20120175248
    Abstract: The present invention provides methods of electroplating a film or films onto a top surface of a continuously moving roll-to-roll sheet. In one aspect, the invention includes continuously electroplating a film onto a conductive surface using an electroplating unit as the roll-to-roll sheet moves therethrough.
    Type: Application
    Filed: January 7, 2011
    Publication date: July 12, 2012
    Applicant: SoloPower, Inc.
    Inventors: Jorge Vasquez, Mustafa Pinarbasi, Satyaki Dutta, James Freitag, Serdar Aksu
  • Publication number: 20120055543
    Abstract: The present invention provides for new ohmic contact materials and diffusion barriers for Group IBIIIAVIA based solar cell structures, which eliminate two way diffusion while preserving the efficient ohmic contacts between the substrate and the absorber layers.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 8, 2012
    Applicant: SOLOPOWER, INC.
    Inventors: Mustafa Pinarbasi, James Freitag, Jorge Vasquez
  • Patent number: 8088224
    Abstract: The present inventions provide method and apparatus that employ constituents vaporized from one or more constituent supply source or sources to form one or more films of a precursor layer formed on a surface of a continuous flexible workpiece. Of particular significance is the implementation of vapor deposition systems that operate upon a horizontally disposed portion of a continuous flexible workpiece and a vertically disposed portion of a continuous flexible workpiece, preferably in conjunction with a short free-span zone of the portion of a continuous flexible workpiece.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: January 3, 2012
    Assignee: SoloPower, Inc.
    Inventors: Jorge Vasquez, James Freitag, Mustafa Pinarbasi
  • Publication number: 20110177645
    Abstract: The present inventions provide method and apparatus that employ constituents vaporized from one or more constituent supply source or sources to form one or more films of a precursor layer formed on a surface of a continuous flexible workpiece. Of particular significance is the implementation of vapor deposition systems that operate upon a horizontally disposed portion of a continuous flexible workpiece and a vertically disposed portion of a continuous flexible workpiece, preferably in conjunction with a short free-span zone of the portion of a continuous flexible workpiece.
    Type: Application
    Filed: April 28, 2010
    Publication date: July 21, 2011
    Applicant: SOLOPOWER, INC.
    Inventors: Jorge Vasquez, James Freitag, Mustafa Pinarbasi
  • Publication number: 20110108099
    Abstract: A solar cell including a high electrical resistivity transparent layer formed on a CdS buffer layer is provided. The high electrical resistivity transparent layer includes an intrinsic oxide film formed on the buffer layer and an intermediate oxide film formed on the intrinsic oxide film. The intrinsic oxide film includes undoped zinc oxide and has a thickness range of 10 to 40 nm. The intermediate oxide film includes semi-intrinsic zinc oxide doped with aluminum and has a thickness range of 50-150 nm. The intermediate oxide film has an aluminum concentration of less than 1000 ppm.
    Type: Application
    Filed: November 11, 2009
    Publication date: May 12, 2011
    Applicant: SoloPower, Inc.
    Inventors: Mustafa Pinarbasi, James Freitag
  • Publication number: 20110039366
    Abstract: In one embodiment, a continuous electroless deposition method and a system to form a solar cell buffer layer with a varying composition through its thickness are provided. The composition of the buffer layer is varied by varying the composition of a chemical bath deposition solution applied onto an absorber surface on which the buffer layer with varying composition is formed. In one example, the buffer layer with varying composition includes a first section containing CdS, a second section containing CdZnS formed on top of the already deposited CdS, and a third section containing ZnS is formed on the second section All the process steps are applied in a roll-to-roll fashion. In another embodiment, a transparent conductive layer including a first transparent conductive film such as aluminum doped zinc oxide and a second transparent conductive film such as indium tin oxide is deposited over the buffer layer with the varying composition.
    Type: Application
    Filed: July 26, 2010
    Publication date: February 17, 2011
    Applicant: SOLOPOWER, INC.
    Inventors: Bulent M. Basol, Mustafa Pinarbasi, James Freitag