Patents by Inventor An-Gong Yeh

An-Gong Yeh 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: 10786372
    Abstract: An implantable frame comprises a plurality of corner structures configured to decrease pressure to the vessel wall and define pulsatility enhancing windows of the implantable frame. The corner structures may comprise plurality of neighboring longitudinal struts that extend in a longitudinal direction of the blood vessel when placed to form the vessel wall to a substantially polygonal cross-section and distribute pressure loading of the corner structure among the plurality of neighboring longitudinal struts to improve biocompatibility. The corner structures also allow increased forming of the vessel wall and can provide stretching of the vessel wall to enhance pulsatility of the vessel wall.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: September 29, 2020
    Assignee: Vascular Dynamics, Inc.
    Inventors: Chung Hao Yeh, Jennifer Gong, Brent Seybold, Christopher Ken, Suji Shetty, Edward F. Ruppel, Jr., Robert Stern
  • Publication number: 20200190415
    Abstract: Systems and methods are provided for modifying or selecting processing conditions for bright stock formation based on compositional characterization of the feedstock and/or bright stock products. In some aspects, the compositional information can include Z-class characterization of the components of a feed and/or bright stock product, optionally in combination with carbon number and/or molecular weight for the components. The compositional information can be used to select processing conditions to allow for removal and/or modification of selected components within a bright stock in order to improve throughput and/or provide desirable cold flow properties.
    Type: Application
    Filed: December 9, 2019
    Publication date: June 18, 2020
    Inventors: Liezhong Gong, Helen S. Wellons, Kuangnan Qian, Lisa I. Yeh, James W. Gleeson
  • Publication number: 20200023030
    Abstract: Provided are methods and compositions from reprogramming human glial cells into human neurons. The reprogramming is achieved using combinations of compounds that can modify signaling via Transforming growth factor beta (TGF-?), Bone morphogenetic protein (BMP), glycogen synthase kinase 3 (GSK-3), and ?-secretase/Notch pathways. The reprogramming is demonstrated using groups of three or four compounds that are chosen from the group thiazovivin, LDN193189, SB431542, TTNPB, CHIR99021, DAPT, VPA, SAG purmorphamine. Reprogramming is demonstrated using the group of LDN193189/CHIR99021/DAPT, the group of B431542/CHIR99021/DAPT, the group of LDN193189/DAPT/SB431542, the group of LDN193189/CHIR99021/SB431542, a three drug combination of SB431542/CHIR99021/DAPT. Reprogramming using functional analogs of the compounds is also provided, as are pharmaceutical formulations that contain the drug combinations.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 23, 2020
    Inventors: Gong CHEN, Gang-Yi WU, Lei ZHANG, Jiu-Chao YIN, Hana YEH, Ning-Xin MA, Grace LEE
  • Patent number: 10426814
    Abstract: Provided are methods and compositions from reprogramming human glial cells into human neurons. The reprogramming is achieved using combinations of compounds that can modify signaling via Transforming growth factor beta (TGF-?), Bone morphogenetic protein (BMP), glycogen synthase kinase 3 (GSK-3), and ?-secretase/Notch pathways. The reprogramming is demonstrated using groups of three or four compounds that are chosen from the group thiazovivin, LDN193189, SB431542, TTNPB, CHIR99021, DAPT, VPA, SAG purmorphamine. Reprogramming is demonstrated using the group of LDN193189/CHIR99021/DAPT, the group of B431542/CHIR99021/DAPT, the group of LDN193189/DAPT/SB431542, the group of LDN193189/CHIR99021/SB431542, a three drug combination of SB431542/CHIR99021/DAPT. Reprogramming using functional analogs of the compounds is also provided, as are pharmaceutical formulations that contain the drug combinations.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: October 1, 2019
    Assignee: The Penn State Research Foundation
    Inventors: Gong Chen, Gang-Yi Wu, Lei Zhang, Jiu-Chao Yin, Hana Yeh, Ning-Xin Ma, Grace Lee
  • Publication number: 20150119514
    Abstract: A stabilized color pigment dispersion includes a phosphated polymer, a color pigment stabilized in the phosphated polymer, and an aqueous carrier. The color pigment comprises one or more oxide color pigments and is essentially free from metallic pigments. The stabilized color pigment dispersion comprises in a range of from about 20% to about 80% of water, percentage based on the total weight of the stabilized color pigment dispersion.
    Type: Application
    Filed: May 9, 2013
    Publication date: April 30, 2015
    Inventor: An-Gong Yeh
  • Publication number: 20070266120
    Abstract: Systems and methods for handling instructions in a pre-boot execution environment are disclosed. A controlling server may connect to a pre-boot control (PBC) proxy server via a network and transmit over the network from the controlling server to the PBC proxy server instructions for a pre-boot task to be completed by a network bootstrap program (NBP) on a client system connected to the PBC proxy server. The NBP may poll the PBC proxy server to determine if any instructions for a pre-boot task to be completed are available. If instructions are available, the instructions may be transmitted from the PBC proxy server to the NBP, and the pre-boot task executed by the NBP on the client system. If instructions are not available, the NBP may sleep for a specified interval of time and repoll the PBC proxy server after the specified interval.
    Type: Application
    Filed: May 10, 2006
    Publication date: November 15, 2007
    Inventors: Joseph Tallieu, Vijay Halaharvi, Gong Yeh
  • Patent number: 6899754
    Abstract: This invention pertains to aqueous inkjet inks containing self-dispersing pigments and effective amounts of one or more multivalent cations, said inks having increased optical density when printed.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: May 31, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: An-Gong Yeh, Jose E. Valentini
  • Patent number: 6852156
    Abstract: A process is provided in which a pigment is oxidated with ozone in an aqueous environment in which the mixture of ozone, water and pigment is subjected to a dispersive mixing operation; and/or the pH of the mixture is maintained in a range of 6-8, whereby the pigment is self-dispersing and preferably has an acid value of less than 3 ?moles/M2. Pigments from this process and ink jet inks containing the self-dispersing pigments, are also provided.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: February 8, 2005
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: An-Gong Yeh, Michael J. Eiseman, Robert Paul Held, James L. Hohman, Dhiren V. Patel, Yia-Ching Ray, Harry Joseph Spinelli, Sandra L. Witman
  • Publication number: 20040149169
    Abstract: A method of producing self dispersible organic pigment particles stabilized by the method. The method includes modifying organic pigment particles and then contacting the surface modified particles with an aqueous vapor entrained in a carrier gas to produce the stabilized organic pigment particles. Typically the pigment particles are modified by exposing their surfaces to ozone or a plasma-activated process gas. The surface stabilizing method prevents the violent exothermic reaction, which occurs when surface modified pigment particles are exposed to ambient air. The method is accomplished in a device, which includes a reactor, means for introducing in the reactor aqueous vapor entrained in a carrier gas and an agitator assembly for deagglomerating during surface modification the pigment particles placed in the reactor.
    Type: Application
    Filed: January 22, 2004
    Publication date: August 5, 2004
    Inventors: An-Gong Yeh, Sandra L. Witman, James L. Hohman
  • Patent number: 6709507
    Abstract: A method of producing self dispersible organic pigment particles stabilized by the method. The method includes modifying organic pigment particles and then contacting the surface modified particles with an aqueous vapor entrained in a carrier gas to produce the stabilized organic pigment particles. Typically the pigment particles are modified by exposing their surfaces to ozone or a plasma-activated process gas. The surface stabilizing method prevents the violent exothermic reaction, which occurs when surface modified pigment particles are exposed to ambient air. The method is accomplished in a device, which includes a reactor, means for introducing in the reactor aqueous vapor entrained in a carrier gas and an agitator assembly for deagglomerating during surface modification the pigment particles placed in the reactor.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: March 23, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: An-Gong Yeh, Sandra L. Witman, James L. Hohman
  • Publication number: 20040035319
    Abstract: This invention pertains to aqueous inkjet inks containing self-dispersing pigments and effective amounts of one or more multivalent cations, said inks having increased optical density when printed.
    Type: Application
    Filed: May 29, 2003
    Publication date: February 26, 2004
    Inventors: An-Gong Yeh, Jose E. Valentini
  • Publication number: 20030077446
    Abstract: A method of producing self dispersible organic pigment particles stabilized by the method. The method includes modifying organic pigment particles and then contacting the surface modified particles with an aqueous vapor entrained in a carrier gas to produce the stabilized organic pigment particles. Typically the pigment particles are modified by exposing their surfaces to ozone or a plasma-activated process gas. The surface stabilizing method prevents the violent exothermic reaction, which occurs when surface modified pigment particles are exposed to ambient air. The method is accomplished in a device, which includes a reactor, means for introducing in the reactor aqueous vapor entrained in a carrier gas and an agitator assembly for deagglomerating during surface modification the pigment particles placed in the reactor.
    Type: Application
    Filed: August 23, 2002
    Publication date: April 24, 2003
    Inventors: An-Gong Yeh, Sandra L. Witman, James L. Hohman
  • Patent number: 6383301
    Abstract: This invention relates to an improved apparatus for treating the surface of particles by plasma-activated gas species to modify the particle surfaces.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: May 7, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Timothy Allan Bell, Wronald Scott Best, Michael Patrick Chouinard, Paul Francis Herman, James Lewis Hohman, Jr., Laurence J. Levase, Tyau-Jeen Lin, An-Gong Yeh, Thomas William Harding
  • Publication number: 20020014184
    Abstract: A process is provided in which a pigment is oxidated with ozone in an aqueous environment in which the mixture of ozone, water and pigment is subjected to a dispersive mixing operation; and/or the pH of the mixture is maintained in a range of 6-8, whereby the pigment is self-dispersing and preferably has an acid value of less than 3 &mgr;moles/M2. Pigments from this process and ink jet inks containing the self-dispersing pigments, are also provided.
    Type: Application
    Filed: May 23, 2001
    Publication date: February 7, 2002
    Inventors: An-Gong Yeh, Michael J. Eiseman, Robert Paul Held, James L. Hohman, Dhiren V. Patel, Yia-Ching Ray, Harry Joseph Spinelli, Sandra L. Witman
  • Patent number: 6156114
    Abstract: A method for treating the surface of substantially each deagglomerated particle of an array of easily agglomerated particles by contacting deagglomerated particles with a plasma-activated gas species and modifying the surfaces of the deagglomerated particles to aid subsequent incorporation of the particles into a matrix composition; the module for deagglomerating and dispersing the particles into the plasma-activated gas; the apparatus that comprises the deagglomeration module (322) and a reaction chamber (20) in which the particles are treated with the plasma-activated gas; the method for deagglomerating particles that may reagglomerate after plasma treatment; and a color composition containing plasma-treated pigment particles.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: December 5, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Timothy Allan Bell, Wronald Scott Best, Michael Patrick Chouinard, Paul Francis Herman, James Lewis Hohman, Jr., Laurence J. Levase, Tyau-Jeen Lin, An-Gong Yeh, Thomas William Harding
  • Patent number: 5024387
    Abstract: A method for optimizing the processing of continuous media mills is disclosed. It has been found that using a differential pressure device to measure the pressure drop across the mill allows the on line determination of the state of media fluidization in the mill. Operation within an optimum mill base flow rate range is needed to have good fluidization of the media so that grinding can be efficient. Using differential pressure measurement allows a precise determination of the mill base flow rate range which provides full fluidization of the media and mill base flow rate control within that range.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: June 18, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: An-Gong Yeh