Patents by Inventor Curtis Williamson

Curtis Williamson 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).

  • Publication number: 20220213610
    Abstract: Features of substrates are copper electroplated by a method which involves copper electroplating selectively deposited seed layers or seed layers of photoresist defined features with a copper electroplating composition containing select suppressor compounds and select leveler compounds which enable anisotropic plating. Optionally, the seed layers can be treated with an aqueous solution of sulfur containing accelerators prior to copper electroplating.
    Type: Application
    Filed: December 29, 2021
    Publication date: July 7, 2022
    Inventors: Alejo M. Lifschitz Arribio, Alexander Zielinski, Samer Hammoodi, Joseph F. Lachowski, Michael K. Gallagher, Curtis Williamson, Jonathan D. Prange
  • Publication number: 20220066092
    Abstract: Provided is an optical waveguide comprising a core surrounded by a cladding, wherein the core is in the shape of a trapezoid with sidewall angles between 60° and 85° and an opto-electronic circuit comprising the optical waveguide. Operational characteristics of the optical waveguide are shown to be superior to those of incumbent devices.
    Type: Application
    Filed: August 6, 2021
    Publication date: March 3, 2022
    Inventors: Michael K. Gallagher, Masaki Kondo, Jake Joo, James F. Ryley, Yi Shen, Curtis Williamson, Zhebin Zhang
  • Patent number: 10118833
    Abstract: A methodology for synthesizing a nanoparticle batch, such as but not limited to a metal chalcogenide nanoparticle batch and further such as but not limited to a metal sulfide nanoparticle batch is predicated upon an expectation and observation that at elevated concentrations of at least one reactant material within a heat-up nanoparticle batch synthesis method, the resulting nucleated batch comprises nanoparticles that may be dimensionally focused to provide a substantially monodisperse nanoparticle batch. The embodied methodology is also applicable to a continuous reactor. The embodied methodology also considers viscosity as a dimensionally focusing result effective variable.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: November 6, 2018
    Assignee: Cornell University
    Inventors: Richard D. Robinson, Tobias Hanrath, Curtis Williamson, Douglas Nevers
  • Publication number: 20170253493
    Abstract: A methodology for synthesizing a nanoparticle batch, such as but not limited to a metal chalcogenide nanoparticle batch and further such as but not limited to a metal sulfide nanoparticle batch is predicated upon an expectation and observation that at elevated concentrations of at least one reactant material within a heat-up nanoparticle batch synthesis method, the resulting nucleated batch comprises nanoparticles that may be dimensionally focused to provide a substantially monodisperse nanoparticle batch. The embodied methodology is also applicable to a continuous reactor. The embodied methodology also considers viscosity as a dimensionally focusing result effective variable.
    Type: Application
    Filed: October 2, 2015
    Publication date: September 7, 2017
    Inventors: Richard D. ROBINSON, Tobias HANRATH, Curtis WILLIAMSON, Douglas NEVERS
  • Publication number: 20050000070
    Abstract: A pile fabric may be employed in automotive, furniture upholstery and other applications. Pile surfaces on such fabrics may be provided in tufts, or collections of fiber bundles, arranged in rows upon a base portion. Fabrics and methods of making fabrics which minimize the average amount of void space between respective tufts or rows are disclosed. Fabrics which provide more effective overall fabric coverage upon base portions of the fabric are described. A method of “heat shocking” fibers during the drawing of said fibers to pre-stress the fiber and thereby produce a fabric having greater bloom or bulk is disclosed. Providing differential heat history to predetermined portions of the fiber may be a suitable manner of obtaining a fiber which can be used to form a fabric having greater bulk.
    Type: Application
    Filed: July 3, 2003
    Publication date: January 6, 2005
    Inventors: Curtis Williamson, Michael Keller
  • Publication number: 20050003142
    Abstract: A pile fabric may be employed in automotive, furniture upholstery and other applications. Pile surfaces on such fabrics may be provided in tufts, or collections of fiber bundles, arranged in rows upon a base portion. Fabrics and methods of making fabrics which minimize the average amount of void space between respective tufts or rows are disclosed. Fabrics which provide more effective overall fabric coverage upon base portions of the fabric are described. A method of “heat shocking” fibers during the drawing of said fibers to pre-stress the fiber and thereby produce a fabric having greater bloom or bulk is disclosed. Providing differential heat history to predetermined portions of the fiber may be a suitable manner of obtaining a fiber which can be used to form a fabric having greater bulk.
    Type: Application
    Filed: July 3, 2003
    Publication date: January 6, 2005
    Inventors: Curtis Williamson, Michael Keller