Patents by Inventor Yunjun Li

Yunjun Li 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: 8404160
    Abstract: A metallic ink including a vehicle, a multiplicity of copper nanoparticles, and an alcohol. The conductive metallic ink may be deposited on a substrate by methods including inkjet printing and draw-down printing. The ink may be pre-cured and cured to form a conductor on the substrate.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: March 26, 2013
    Assignees: Applied Nanotech Holdings, Inc., Ishihara Chemical Co., Ltd.
    Inventors: Yunjun Li, David Max Roundhill, Xueping Li, Peter B. Laxton, Hidetoshi Arimura, Zvi Yaniv
  • Publication number: 20130017647
    Abstract: Described herein is a novel material that easily penetrates silicon nitride-based anti-reflective coatings, forming a high quality electrical contact. A method for metallization on a solar cell includes depositing a passivation layer on a silicon substrate of a solar cell, depositing derivatized metal particles onto the passive layer, heating the substrate of the solar cell to migrate surface coatings from the derivatized metal particles onto the passivation layer creating a diffusion Channel through passivation layer to the silicon substrate, and as the metal particles melt due to the heating on the substrate, the melted metal diffuses through the diffusion channel forming a metallic content with the silicon substrate.
    Type: Application
    Filed: July 10, 2012
    Publication date: January 17, 2013
    Applicant: APPLIED NANOTECH HOLDINGS, INC.
    Inventors: James P. Novak, Yunjun Li
  • Publication number: 20120288991
    Abstract: For solar cell fabrication, the addition of precursors to printable media to assist etching through silicon nitride or silicon oxide layer thus affording contact with the substance underneath the nitride or oxide layer. The etching mechanism may be by molten ceramics formed in situ, fluoride-based etching, as well as a combination of the two.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 15, 2012
    Applicant: APPLIED NANOTECH HOLDINGS, INC.
    Inventors: Ovadia Abed, Yunjun Li, James P. Novak, Samuel Kim
  • Patent number: 8292350
    Abstract: A vehicle has an inflatable air dam assembly that is deployed and stowed by a bidirectional deploy/stow system. The deployment and stowing may be based on vehicle speed. The deploy/stow system includes an air compressor and first and second valves for directing air into and out of the air dam assembly. The compressor operates on both deploy and stow operations to fill and evacuate, respectively, the air dam assembly.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: October 23, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Yunjun Li, Peter T. Karlson, Theodore Adamczyk, Jr.
  • Patent number: 8264137
    Abstract: A binder material, inorganic polymer, is used to formulate carbon nanotube pastes. This material can be cured at 200° C. and has a thermal-stability up to 500° C. Low-out gassing of this binder material makes it a good candidate for long life field emission devices. Due to better adhesion with this binder material, a strong adhesive peelable polymer from liquid form can be applied on the CNT cathode to achieve a uniform activation with even contact and pressure on the surface. The peelable polymer films may be used both as an activation layer and a mask layer to fabricate high-resolution patterned carbon nanotube cathodes for field emission devices using lithographic processes.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: September 11, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yunjun Li
  • Patent number: 8253281
    Abstract: An energy harvesting apparatus, for deployment on a vehicle, comprises a vehicle shock absorber including a dust tube, and a damper tube telescopically mounted within the dust tube and configured for oscillating translational movement with respect thereto. A magnet is fixedly coupled to one of the dust tube or the damper tube, and a coil is fixedly coupled to the other of the dust tube or the damper tube to achieve relative translational movement between the magnet and the coil to induce a current in the coil.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: August 28, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Chandra S. Namuduri, Yunjun Li, Timothy J. Talty, Robert B. Elliott, Nancy McMahon
  • Publication number: 20120153581
    Abstract: An integrated pneumatic system including a motor, air compressor, air dryer, valves, air lines and electronic controller pneumatically controls both an air springs system and an inflatable air dam assembly, wherein the trim height adjustment of the air springs may be individual or collective, and wherein the trim height adjustment of the air springs and the inflation and deflation of the inflatable air dam assembly may be mutually coordinated with respect to vehicular speed and the duration of vehicular speed ranges.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 21, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Yunjun Li
  • Publication number: 20120142140
    Abstract: In a process for producing a solar cell, a sintering process performed on a nickel nanoparticle ink forms nickel silicide to create good adhesion and a low electrical ohmic contact to a silicon layer underneath, and allows for a subsequently electroplated metal layer to reduce electrode resistances. The printed nickel nanoparticles react with the silicon nitride of the antireflective layer to form conductive nickel silicide.
    Type: Application
    Filed: December 1, 2011
    Publication date: June 7, 2012
    Applicant: APPLIED NANOTECH HOLDINGS, INC.
    Inventors: YUNJUN LI, XUEPING LI, JAMES P. NOVAK
  • Publication number: 20120128878
    Abstract: A hybrid carbon nanotube and clay nanofiller is produced by a freeze-drying process performed on clay platelets, and carbon nanotubes grown on the clay platelets using a chemical vapor deposition process.
    Type: Application
    Filed: April 26, 2007
    Publication date: May 24, 2012
    Applicant: NANO-PROPRIETARY, INC.
    Inventors: Yunjun Li, James Novak
  • Patent number: 8185269
    Abstract: An active suspension system and method for controlling the height of a vehicle. In an exemplary embodiment, the active suspension system receives information from one or more input sources, including both internal and external vehicle inputs, and uses that information to actively control the vehicle height. By doing so, the active suspension system can reduce aerodynamic drag on the vehicle and improve the vehicle's fuel economy, ride comfort, handling, and other aspects of operation. Some examples of external vehicle inputs that may be used include: short-range road and vehicle information, as well as long-range traffic, road and route information.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: May 22, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Yunjun Li, Timothy J. Herrick, Nancy McMahon, Steven A. Opiteck, John X. Cui, Loren J. Majersik, Nathan A. Wilmot
  • Patent number: 8175770
    Abstract: A system is provided for determining a distance between a vehicular suspension assembly and the ground, wherein the suspension assembly has a first member. The system comprises a first transceiver coupled to the first member for emitting a first interrogation signal toward the ground, and for receiving a first reflection of the first interrogation signal from the ground, and a processor coupled to the first transceiver for determining the distance of the first transceiver from the ground.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: May 8, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Timothy J. Talty, Chandra S. Namuduri, Yunjun Li, Robert B. Elliott, Nancy McMahon
  • Patent number: 8174377
    Abstract: A system is provided for determining a distance between a first portion of a vehicular suspension assembly and a second portion of the suspension assembly. The system comprises a transceiver coupled to the first portion for emitting a first signal toward the second portion, and for receiving a reflection of the first signal from the second portion, and a processor coupled to the transceiver for determining the distance between the first portion and the second portion.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: May 8, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Chandra S. Namuduri, Yunjun Li, Timothy J. Talty, Robert B. Elliott, Nancy McMahon
  • Patent number: 8160774
    Abstract: An actuator system for determining a relative height differential between a housing of an actuator assembly and a body of the actuator assembly for a vehicle is provided. The vehicle has a suspension wherein the housing is coupled to a first portion of the suspension, and the body is coupled to a second portion of the suspension. The system comprises a sensor coupled to the inside of the housing, and a target coupled to the outside of the body, the sensor and the target cooperating to form a magnetic field that varies in a manner indicative of the distance therebetween.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: April 17, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Yunjun Li, Chandra S. Namuduri, Nancy McMahon, Robert B. Elliott
  • Patent number: 8143766
    Abstract: An energy harvesting apparatus for deployment on a vehicle having a frame includes a spring assembly coupled to the frame and configured for compressions and extensions during vehicle travel. A piezoelectric device is mounted on the spring assembly for generating electrical energy in response to the strain imposed thereon. A rectifier is coupled to the piezoelectric device for converting AC electrical energy to DC.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: March 27, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Chandra S. Namuduri, Yunjun Li, Timothy J. Talty, Robert B. Elliott, Nancy McMahon
  • Patent number: 8135514
    Abstract: Automotive systems and methods for operating vehicles are provided. In an embodiment, when a speed sensor senses that the vehicle speed is above a first speed threshold and an ambient light sensor senses that an ambient light intensity is below a first intensity threshold, a controller provides a first command to a suspension system to lower a first end of a vehicle body to a second front trim height position relative to a horizontal plane, where the second front trim height position is below a first front trim height position, and to lower the second end of the body to a second rear trim height position relative to the horizontal plane, where the second rear trim height position is below a first rear trim height position.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: March 13, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Leonard B. Kelly, Yunjun Li, Gregory G. Gordon, Nancy McMahon, Todd H. Barnes
  • Publication number: 20120001450
    Abstract: An air dam deployment and retraction system includes an air dam, a compressor, an air reservoir, a first switch, a second switch, and a third switch. The air dam is configured for moving between a deployed position and a retracted position. The compressor is configured to compress fluid. The air reservoir defines a chamber that is configured to receive a volume of the compressed fluid. The first switch is configured to selectively move between a first inactive position and a first active position. The first inactive position is configured to provide the compressed fluid to the atmosphere. The first active position is configured to provide the compressed fluid from the compressor to one of the chamber of the air reservoir and the air dam. The air dam is configured to move from the retracted position to the deployed position upon receiving the compressed fluid.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 5, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Yunjun Li, Theodore Adamczyk, JR., Peter T. Karlson
  • Publication number: 20110300305
    Abstract: Nanoparticle inks and powders are sintered using an applied mechanical energy, such as uniaxial pressure, hydrostatic pressure, and ultrasonic energy, which may also include applying a sheer force to the inks or powders in order to make the resultant film or line conductive.
    Type: Application
    Filed: May 2, 2011
    Publication date: December 8, 2011
    Applicant: APPLIED NANOTECH HOLDINGS, INC.
    Inventors: Yunjun Li, Samuel Kim, Igor Pavlovsky, Zvi Yaniv, Mohshi Yang
  • Patent number: 8063498
    Abstract: An energy harvesting apparatus is deployed on a vehicle and comprises a vehicular shock absorber capable of reciprocating translational movement in response to roadway perturbations. A coil is mounted within the shock absorber. An engine is also mounted within the shock absorber for converting the translational movement into rotational movement. A magnet is coupled to the engine and is configured to be rotated in the vicinity of the coil to produce electrical energy in the coil.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: November 22, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: Chandra S. Namuduri, Yunjun Li, Timothy J. Talty, Robert B. Elliott, Nancy McMahon
  • Publication number: 20110260499
    Abstract: A vehicle has an inflatable air dam assembly that is deployed and stowed by a bidirectional deploy/stow system. The deployment and stowing may be based on vehicle speed. The deploy/stow system includes an air compressor and first and second valves for directing air into and out of the air dam assembly. The compressor operates on both deploy and stow operations to fill and evacuate, respectively, the air dam assembly.
    Type: Application
    Filed: April 26, 2010
    Publication date: October 27, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Yunjun Li, Peter T. Karlson, Theodore Adamczyk, JR.
  • Publication number: 20110217809
    Abstract: A silicon solar cell is formed with an N-type silicon layer on a P-type silicon semiconductor substrate. An antireflective and passivation layer is deposited on the N-type silicon layer, and then an aluminum ink composition is printed on the back of the silicon wafer to form the back contact electrode. The back contact electrode is sintered to produce an ohmic contact between the electrode and the P-type silicon layer. The aluminum ink composition may include aluminum powders, a vehicle, an inorganic polymer, and a dispersant. Other electrodes on the solar cell can be produced in a similar manner with the aluminum ink composition.
    Type: Application
    Filed: November 12, 2009
    Publication date: September 8, 2011
    Applicant: APPLIED NANOTECH HOLDINGS, INC.
    Inventors: Yunjun Li, Peter B. Laxton, James Novak, David Max Roundhill