Patents by Inventor Norine Chang

Norine Chang 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).

  • Pre-conditioned self-destructing substrate
    Patent number: 11810871
    Abstract: A self-destructing device includes a frangible substrate having at least one pre-weakened area. A heater is thermally coupled to the frangible substrate proximate to or at the pre-weakened area. When activated, the heater generates heat sufficient to initiate self-destruction of the frangible substrate by fractures that propagate from the pre-weakened area and cause the frangible substrate to break into many pieces.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: November 7, 2023
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Christopher L. Chua, Norine Chang, Gregory Whiting
  • PRE-CONDITIONED SELF-DESTRUCTING SUBSTRATE
    Publication number: 20210143110
    Abstract: A self-destructing device includes a frangible substrate having at least one pre-weakened area. A heater is thermally coupled to the frangible substrate proximate to or at the pre-weakened area. When activated, the heater generates heat sufficient to initiate self-destruction of the frangible substrate by fractures that propagate from the pre-weakened area and cause the frangible substrate to break into many pieces.
    Type: Application
    Filed: December 17, 2020
    Publication date: May 13, 2021
    Inventors: Christopher L. Chua, Norine Chang, Gregory Whiting
  • Electrically-activated pressure vessels for fracturing frangible structures
    Patent number: 10969205
    Abstract: An apparatus includes a pressure device bonded to the surface of a structure at a bonding location. The vessel comprises an interior space within the vessel and a bonding surface. A bonding agent bonds the bonding surface of the vessel to a surface of the structure. A gas-emitting material is disposed within the interior space of the vessel and an initiator is arranged to activate the gas-emitting material. Upon activation of the gas-emitting material by the initiator, the pressure device produces a localized force that breaks the structure.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: April 6, 2021
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Christopher L. Chua, Norine Chang, Erica Ronchetto
  • Pre-conditioned substrate
    Patent number: 10903173
    Abstract: A self-destructing device includes a frangible substrate having at least one pre-weakened area. A heater is thermally coupled to the frangible substrate proximate to or at the pre-weakened area. When activated, the heater generates heat sufficient to initiate self-destruction of the frangible substrate by fractures that propagate from the pre-weakened area and cause the frangible substrate to break into many pieces.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: January 26, 2021
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Christopher L. Chua, Norine Chang, Gregory Whiting
  • ELECTRICALLY-ACTIVATED PRESSURE VESSELS FOR FRACTURING FRANGIBLE STRUCTURES
    Publication number: 20200348112
    Abstract: An apparatus includes a pressure device bonded to the surface of a structure at a bonding location. The vessel comprises an interior space within the vessel and a bonding surface. A bonding agent bonds the bonding surface of the vessel to a surface of the structure. A gas-emitting material is disposed within the interior space of the vessel and an initiator is arranged to activate the gas-emitting material. Upon activation of the gas-emitting material by the initiator, the pressure device produces a localized force that breaks the structure.
    Type: Application
    Filed: May 3, 2019
    Publication date: November 5, 2020
    Inventors: Christopher L. Chua, Norine Chang, Erica Ronchetto
  • PRE-CONDITIONED SELF-DESTRUCTING SUBSTRATE
    Publication number: 20180114761
    Abstract: A self-destructing device includes a frangible substrate having at least one pre-weakened area. A heater is thermally coupled to the frangible substrate proximate to or at the pre-weakened area. When activated, the heater generates heat sufficient to initiate self-destruction of the frangible substrate by fractures that propagate from the pre-weakened area and cause the frangible substrate to break into many pieces.
    Type: Application
    Filed: October 20, 2016
    Publication date: April 26, 2018
    Inventors: Christopher L. Chua, Norine Chang, Gregory Whiting
  • Inkjet printhead incorporating oleophobic membrane
    Patent number: 9044943
    Abstract: An inkjet printhead includes an oleophobic membrane arranged at a location that allows the oleophobic membrane to simultaneously vent air from an ink flow channel of the printhead and to retain ink within the ink flow channel. The oleophobic membrane includes a metal structure having a nanostructured surface and low-surface energy coating disposed on the metal structure.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: June 2, 2015
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Norine Chang, David Matthew Johnson, Scott J. Limb, John S. Paschkewitz, Eric J. Shrader
  • Methods and devices for venting air from ink jet printer subassemblies using oleophobic membranes
    Patent number: 9016841
    Abstract: An ink jet printer subassembly comprises an ink flow channel that includes an oleophobic membrane configured to contain ink in the ink flow channel while allowing air to vent out of the ink flow channel through the oleophobic membrane.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: April 28, 2015
    Assignee: Palo Alto Research Center Incorporated
    Inventors: David Matthew Johnson, Norine Chang, Eric J. Shrader, John S. Paschkewitz
  • METHODS AND DEVICES FOR VENTING AIR FROM INK JET PRINTER SUBASSEMBLIES USING OLEOPHOBIC MEMBRANES
    Publication number: 20140300666
    Abstract: An ink jet printer subassembly comprises an ink flow channel that includes an oleophobic membrane configured to contain ink in the ink flow channel while allowing air to vent out of the ink flow channel through the oleophobic membrane.
    Type: Application
    Filed: April 3, 2013
    Publication date: October 9, 2014
    Inventors: David Matthew Johnson, Norine Chang, Eric J. Shrader, John S. Paschkewitz