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).
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Patent number: 11944130Abstract: 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: GrantFiled: December 24, 2020Date of Patent: April 2, 2024Assignee: 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
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Patent number: 6959015Abstract: 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: GrantFiled: May 9, 2001Date of Patent: October 25, 2005Assignee: Crest MicrosystemsInventors: Jin H. Hwang, James C. Chang, Mark L. Yang
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Patent number: 6338592Abstract: 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: GrantFiled: January 18, 2000Date of Patent: January 15, 2002Inventor: James C Chang
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Publication number: 20010051960Abstract: 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: ApplicationFiled: March 28, 2001Publication date: December 13, 2001Inventors: Ronald S. Kubick, Preston H. Abbott, James F. Hogan, James C. Chang
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Patent number: 5736190Abstract: 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: GrantFiled: February 23, 1996Date of Patent: April 7, 1998Assignee: Cashem, Inc.Inventors: Douglas A. Usifer, Melvin Brauer, James C. Chang, Yuan Chieh Chu
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Patent number: 5688601Abstract: 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: GrantFiled: March 25, 1994Date of Patent: November 18, 1997Assignee: Caschem, Inc.Inventors: Douglas A. Usifer, Melvin Brauer, James C. Chang, Yuan Chieh Chu
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Patent number: 5619636Abstract: 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: GrantFiled: February 17, 1994Date of Patent: April 8, 1997Assignee: 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
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Patent number: 5110874Abstract: 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: GrantFiled: April 19, 1990Date of Patent: May 5, 1992Assignee: Petrolite CorporationInventors: Michael I. Naiman, James C. Chang
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Patent number: 4983186Abstract: 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: GrantFiled: July 18, 1989Date of Patent: January 8, 1991Assignee: Petrolite CorporationInventors: Michael I. Naiman, James C. Chang
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Patent number: 4569932Abstract: 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: GrantFiled: March 5, 1984Date of Patent: February 11, 1986Assignee: University of Northern Iowa FoundationsInventors: Barton L. Bergquist, James C. Chang
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Patent number: 4490543Abstract: 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: GrantFiled: November 12, 1982Date of Patent: December 25, 1984Assignee: University of Northern Iowa FoundationInventors: Barton L. Bergquist, James C. Chang