Patents by Inventor Ross Stefan Johnson

Ross Stefan Johnson 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: 20220267198
    Abstract: Glass articles having a thin glass layer and atop optically transparent polymeric hard-coat layer disposed on atop surface of the thin glass layer. The top optically transparent polymeric hard-coat layer may have a thickness in a range of 0.1 microns to 200 microns and a pencil hardness of 6H or more, when the pencil hardness is measured with the optically transparent polymeric hard-coat layer disposed on the top surface of the glass layer. The glass articles avoid ejection of glass shard particles from the glass article upon bending to a failure during a static two-point bend test.
    Type: Application
    Filed: August 7, 2020
    Publication date: August 25, 2022
    Inventors: Lujia Bu, Huayun Deng, Suraj S Deshpande, Ross Stefan Johnson, Ying Zhang
  • Patent number: 10435568
    Abstract: The present invention relates to antifouling coatings capable of being switched by using heat or ultraviolet light. Prior to switching, the coating includes an onium cation component having antimicrobial and antibacterial properties. Upon switching, the coating is converted to a conjugated polymer state, and the cationic component is released with any adsorbed biofilm layer. Thus, the coatings herein have switchable and releasable properties. Methods of making and using such coatings are also described.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: October 8, 2019
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Michele L. Baca Denton, Shawn M. Dirk, Ross Stefan Johnson
  • Publication number: 20170226350
    Abstract: The present invention relates to antifouling coatings capable of being switched by using heat or ultraviolet light. Prior to switching, the coating includes an onium cation component having antimicrobial and antibacterial properties. Upon switching, the coating is converted to a conjugated polymer state, and the cationic component is released with any adsorbed biofilm layer. Thus, the coatings herein have switchable and releasable properties. Methods of making and using such coatings are also described.
    Type: Application
    Filed: January 16, 2017
    Publication date: August 10, 2017
    Inventors: Michele L. Baca Denton, Shawn M. Dirk, Ross Stefan Johnson
  • Patent number: 9580608
    Abstract: The present invention relates to antifouling coatings capable of being switched by using heat or ultraviolet light. Prior to switching, the coating includes an onium cation component having antimicrobial and antibacterial properties. Upon switching, the coating is converted to a conjugated polymer state, and the cationic component is released with any adsorbed biofilm layer. Thus, the coatings herein have switchable and releasable properties. Methods of making and using such coatings are also described.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: February 28, 2017
    Assignee: Sandia Corporation
    Inventors: Michele L. Baca Denton, Shawn M. Dirk, Ross Stefan Johnson
  • Publication number: 20140334991
    Abstract: Thermally or photochemically activated small molecule delivery polymers and platforms enable ‘on-demand’ delivery of a vapor-phase lubricant, such as pentanol or other alcohols, that enable scheduled or as-needed lubrication of MEMS devices, thereby greatly improving the reliability and lifespan of the devices.
    Type: Application
    Filed: July 24, 2014
    Publication date: November 13, 2014
    Inventors: Ross Stefan Johnson, Shawn M. Dirk, Cody M. Washburn, Michael T. Dugger
  • Patent number: 8859190
    Abstract: Novel photo-writable and thermally switchable polymeric materials exhibit a refractive index change of ?n?1.0 when exposed to UV light or heat. For example, lithography can be used to convert a non-conjugated precursor polymer to a conjugated polymer having a higher index-of-refraction. Further, two-photon lithography can be used to pattern high-spatial frequency structures.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: October 14, 2014
    Assignee: Sandia Corporation
    Inventors: Shawn M. Dirk, Ross Stefan Johnson, Robert Boye, Michael R. Descour, William C. Sweatt, David R. Wheeler, Bryan James Kaehr