Patents by Inventor James C. Chang

James C. 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).

  • Patent number: 11944130
    Abstract: A vaporizer device includes various modular components. The vaporizer device includes a first subassembly. The first subassembly includes a cartridge connector that secures a vaporizer cartridge to the vaporizer device and includes at least two receptacle contacts that electrically communicate with the vaporizer cartridge. The vaporizer device includes a second subassembly. The second subassembly includes a skeleton defining a rigid tray that retains at least a power source. The vaporizer device also includes a third subassembly. The third subassembly includes a plurality of charging contacts that supply power to the power source, and an end cap that encloses an end of the vaporizer device.
    Type: Grant
    Filed: December 24, 2020
    Date of Patent: April 2, 2024
    Assignee: JUUL Labs, Inc.
    Inventors: Samuel C. Anderson, Wei-Ling Chang, Brandon Cheung, Steven Christensen, Joseph Chun, Joseph R. Fisher, Jr., Nicholas J. Hatton, Kevin Lomeli, James Monsees, Andrew L. Murphy, Claire O'Malley, John R. Pelochino, Hugh Pham, Vipul V. Rahane, Matthew J. Taschner, Val Valentine, Kenneth Wong
  • Patent number: 6959015
    Abstract: The invention provides a novel scheme to align data streams across multiple transmission channels and match multiple transmissions with one receiving rate. The channel aligning aspect of this invention detects the occurrence of an aligning character in a plurality of input channel character streams, buffers the character stream until an aligning character has been detected on every input channel. The channel aligning system transmits filler characters over every output channel corresponding to an input channel where an aligning character has been received if an aligning character has not been detected on every input channel. The aligning system then synchronously transmits the buffered characters, starting with the aligning character and proceeding with the subsequently received characters. The rate matching aspect of this invention receives a plurality of character streams synchronized by a first clock and buffers the character streams.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: October 25, 2005
    Assignee: Crest Microsystems
    Inventors: Jin H. Hwang, James C. Chang, Mark L. Yang
  • Patent number: 6338592
    Abstract: An article connector including an insertion seat having an insertion hole, an opening and a plurality of installation holes; an connection seat mounted with a mounting shaft to combine with the opening of the insertion seat, and having an engaging slot; and two shaft bodies, one of the shaft bodies being provided with a plurality of screw holes, and the engaging slot being engaged with a mounting hole provided at one side of the shaft bodies, thereby the two shaft bodies are formed into a structure by the insertion seat and the connection seat. The two shaft bodies require no screw or does not require a welding process to form into a connector. Thus, these parts can be dismantled and assembled rapidly, and stored in a limited storage space.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: January 15, 2002
    Inventor: James C Chang
  • Publication number: 20010051960
    Abstract: Methods and systems for conducting due diligence are described. In one embodiment, the method comprises identifying data that will be used to assemble at least one standard documentation file, at least one data collector to collect the identified data and a time for collection of the identified data. The identified data is received and stored and the effectiveness of the data collection is evaluated. The standard documentation file is then assembled.
    Type: Application
    Filed: March 28, 2001
    Publication date: December 13, 2001
    Inventors: Ronald S. Kubick, Preston H. Abbott, James F. Hogan, James C. Chang
  • Patent number: 5736190
    Abstract: An electrical component comprising an electrical component having an exterior protective layer on at least a portion of a surface. The layer is a cured copolymer of a reaction between at least one oligomer having a terminal ethylenically unsaturated group and at least one monomer having a terminal ethylenically unsaturated group. Alternatively, the layer is a cured copolymer of a reaction between at least two oligomers having a terminal ethylenically unsaturated group. The copolymerization reaction is preferably in the presence of a free radical initiator curing agent and a transition metal catalyst.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: April 7, 1998
    Assignee: Cashem, Inc.
    Inventors: Douglas A. Usifer, Melvin Brauer, James C. Chang, Yuan Chieh Chu
  • Patent number: 5688601
    Abstract: An electrical component comprising an electrical component having an exterior protective layer on at least a portion of a surface. The layer is a cured copolymer of a reaction between at least one oligomer having a terminal ethylenically unsaturated group and at least one monomer having a terminal ethylenically unsaturated group. Alternatively, the layer is a cured copolymer of a reaction between at least two oligomers having a terminal ethylenically unsaturated group. The copolymerization reaction is preferably in the presence of a free radical initiator curing agent and a transition metal catalyst.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: November 18, 1997
    Assignee: Caschem, Inc.
    Inventors: Douglas A. Usifer, Melvin Brauer, James C. Chang, Yuan Chieh Chu
  • Patent number: 5619636
    Abstract: A highly integrated computer-implemented system for authoring multimedia applications is disclosed. The system includes an object-oriented database for simplifying manipulation of media resources and an authoring tool for defining the details of a multimedia application. The authoring tool is divided into screen editor and iconic editor panes, wherein operators can create interactions by wiring together icons representative of object modules.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: April 8, 1997
    Assignee: Autodesk, Inc.
    Inventors: Mark E. Sweat, Philip G. Van Valkenberg, Cheri D. Melville, Philip N. McDonnell, Cyrus M. Kamada, James R. Wirt, James C. Chang
  • Patent number: 5110874
    Abstract: A method for reducing friction loss in flowing hydrocarbon fluids is disclosed. The method comprises adding to the fluid an effective amount of an oil-soluble polyamine and a terpolymer of styrene, alkyl acrylate and a carboxylic acid selected from the group consisting of acrylic acid and methacrylic acid. Related compositions are also disclosed.
    Type: Grant
    Filed: April 19, 1990
    Date of Patent: May 5, 1992
    Assignee: Petrolite Corporation
    Inventors: Michael I. Naiman, James C. Chang
  • Patent number: 4983186
    Abstract: A method for reducing friction loss in flowing hydrocarbon fluids is disclosed. The method comprises adding to the fluid an effective amount of an oil-soluble polyamine and a terpolymer of styrene, alkyl acrylate and a carboxylic acid selected from the group consisting of acrylic acid and methacrylic acid. Related compositions are also disclosed.
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: January 8, 1991
    Assignee: Petrolite Corporation
    Inventors: Michael I. Naiman, James C. Chang
  • Patent number: 4569932
    Abstract: This invention relates to cisplatin type fluorescently labeled compounds. In particular, the compounds are bis (5-aminofluorescein)-dichloroplatinum (II) or certain substituted analogues thereof. The compounds are useful as radiation sensitivity enhancers and as fluorescent biological tracers. The invention also relates to a unique, single step synthesis for preparing said compounds.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: February 11, 1986
    Assignee: University of Northern Iowa Foundations
    Inventors: Barton L. Bergquist, James C. Chang
  • Patent number: 4490543
    Abstract: Bis(5-aminofluorescein)dichloroplatinum(II), and substituted fluoresceinamine derivatives of this compound are disclosed as highly effective radiation sensitizers which enhance the effect of ionizing radiation on tumor cells, but uniquely do so without the usual accompanying high toxicity level to surrounding normal cells. A direct combination, single step reaction synthesis is disclosed for preparing bis(5-aminofluorescein)dichloroplatinum(II) from the reaction between an alkali metal tetrachloroplatinate(II) and 5-aminofluorescein.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: December 25, 1984
    Assignee: University of Northern Iowa Foundation
    Inventors: Barton L. Bergquist, James C. Chang