Patents by Inventor Songtao Wu

Songtao Wu 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: 9121016
    Abstract: Bioactive coatings that are stabilized against inactivation by weathering are provided including a base associated with a chemically modified enzyme, and, optionally a first polyoxyethylene present in the base and independent of the enzyme. The coatings are optionally overlayered onto a substrate to form an active coating facilitating the removal of organic stains or organic material from food, insects, or the environment.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: September 1, 2015
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Motor Corporation, Regents of the University of Minnesota
    Inventors: Hongfei Jia, Ping Wang, Liting Zhang, Andreas Buthe, Xueyan Zhao, Songtao Wu, Masahiko Ishii, Minjuan Zhang
  • Publication number: 20150175982
    Abstract: A substrate or coating is provided that includes a lipase with enzymatic activity toward a component of a fingerprint. Also provided is a process for facilitating the removal of fingerprints is provided wherein an inventive substrate or coating including a lipase is capable of enzymatically degrading of one or more components of the fingerprint to facilitate fingerprint removal from the substrate or said coating. Applying heat to the substrate or coating increases the rate of fingerprint removal.
    Type: Application
    Filed: March 10, 2015
    Publication date: June 25, 2015
    Inventors: Andreas Buthe, Ping Wang, Songtao Wu, Hongfei Jia, Masahiko Ishii, Minjuan Zhang
  • Publication number: 20150138642
    Abstract: A hybrid omnidirectional structural color pigment. The pigment exhibits a visible color to the human eye and has a very small or non-noticeable color shift when exposed to broadband electromagnetic radiation (e.g. white light) and viewed from angles between 0 and 45° relative to the normal of an outer surface of the pigment. The pigment is in the form or a multilayer stack that has a reflective core layer and at least two high index of refraction (nh) layers. One of the nh layers can be a dry deposited nh dielectric layer that extends across the reflective core layer and one of the layers can be a wet deposited nh outer protective coating layer. An absorber layer that extends between the dry deposited nh dielectric layer and the wet deposited nh outer protective layer can also be included.
    Type: Application
    Filed: January 28, 2015
    Publication date: May 21, 2015
    Inventors: Debasish Banerjee, Songtao Wu, Khoa Vo
  • Patent number: 9012196
    Abstract: A substrate or coating is provided that includes a lipase with enzymatic activity toward a component of a fingerprint. Also provided is a process for facilitating the removal of fingerprints is provided wherein an inventive substrate or coating including a lipase is capable of enzymatically degrading of one or more components of the fingerprint to facilitate fingerprint removal from the substrate or said coating. Applying heat to the substrate or coating increases the rate of fingerprint removal.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: April 21, 2015
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Motor Corporation, Regents of the University of Minnesota
    Inventors: Andreas Buthe, Ping Wang, Songtao Wu, Hongfei Jia, Masahiko Ishii, Minjuan Zhang
  • Publication number: 20150033988
    Abstract: An omnidirectional structural color pigment having a protective coating. The pigment has a first layer of a first material and a second layer of a second material, the second layer extending across the first layer. In addition, the pigment reflects a band of electromagnetic radiation having a predetermined full width at half maximum (FWHM) of less than 300 nm and a predetermined color shift of less than 30° when the pigment is exposed to broadband electromagnetic radiation and viewed from angles between 0 and 45°. The pigment has a weather resistant coating that covers an outer surface thereof and reduces a relative photocatalytic activity of the pigment by at least 50%.
    Type: Application
    Filed: August 15, 2014
    Publication date: February 5, 2015
    Inventors: Songtao Wu, Khoa Vo, Debasish Banerjee, Masahiko Ishii
  • Patent number: 8911986
    Abstract: Temporary active coatings that are stabilized against inactivation by weathering are provided including a base associated with a chemically modified enzyme, and, optionally a first polyoxyethylene present in the base and independent of the enzyme. The coatings are optionally overlayered onto a substrate to form an active coating facilitating the removal of organic stains or organic material from food, insects, or the environment.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: December 16, 2014
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Motor Corporation
    Inventors: Hongfei Jia, Songtao Wu, Masahiko Ishii, Minjuan Zhang
  • Patent number: 8875838
    Abstract: A phononic device is provided suitable for attenuating mechanical vibration, as well as acoustic vibration that propagate through a medium. Through the periodic inclusion of domains of a material in a matrix that vary in the ratio of the longitudinal speed of sound (CL) and the transverse speed of sound (CT) between the domains and the matrix of equal to or greater than 2.0 and 40, respectively; improved significant attenuation of vibration is achieved.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: November 4, 2014
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Arizona Board of Regents, on behalf of the University of Arizona
    Inventors: Kazuhisa Yano, Debasish Banerjee, Songtao Wu, Gaohua Zhu, Nichlas Z. Swinteck, Pierre A. Deymier
  • Publication number: 20140141490
    Abstract: Protein-polymer composite materials are provided according to embodiments of the present invention that include an admixture of a polymer resin, a surfactant and a non-aqueous organic solvent. An aqueous solution containing bioactive proteins is mixed with the admixture. The emulsion is mixed with a crosslinker to produce a curable composition. The curable composition is cured, thereby producing the protein-polymer composite material that is useful for facilitating removal of bioorganic stains.
    Type: Application
    Filed: January 28, 2014
    Publication date: May 22, 2014
    Applicants: Toyota Motor Engineering & Manufacturing North America, Inc., Regents of the University of Minnesota, Toyota Motor Corporation
    Inventors: Ping Wang, Songtao Wu, Hongfei Jia, Masahiko Ishii, Minjuan Zhang, Xiaodong Tong
  • Patent number: 8679825
    Abstract: Protein-polymer composite materials are provided according to embodiments of the present invention that include an admixture of a polymer resin, a surfactant and a non-aqueous organic solvent. An aqueous solution containing bioactive proteins is mixed with the admixture. The emulsion is mixed with a crosslinker to produce a curable composition. The curable composition is cured, thereby producing the protein-polymer composite material that is useful for facilitating removal of bioorganic stains.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: March 25, 2014
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Regents of the University of Minnesota, Toyota Motor Corporation
    Inventors: Ping Wang, Songtao Wu, Hongfei Jia, Masahiko Ishii, Xiaodong Tong, Minjuan Zhang
  • Publication number: 20130345655
    Abstract: A sanitary article is provided that includes a dried polymeric matrix with embedded enzyme. The presence of the enzyme in the polymeric matrix allows the sanitary article to absorb a bodily discharge fluid thereby allowing the embedded enzyme to function in the production of antibacterial compounds or by directly reducing the presence of viable bacteria in the discharge fluid. The enzyme activity promotes reduced odor in the sanitary article.
    Type: Application
    Filed: June 21, 2012
    Publication date: December 26, 2013
    Applicants: Toyota Motor Corporation, Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Songtao Wu, Hongfei Jia, Masahiko Ishii, Minjuan Zhang
  • Publication number: 20130065291
    Abstract: Bioactive coatings that are stabilized against inactivation by weathering are provided including a base associated with a chemically modified enzyme, and, optionally a first polyoxyethylene present in the base and independent of the enzyme. The coatings are optionally overlayered onto a substrate to form an active coating facilitating the removal of organic stains or organic material from food, insects, or the environment.
    Type: Application
    Filed: September 9, 2011
    Publication date: March 14, 2013
    Applicants: Toyota Motor Engineering & Manufacturing North America, Inc., Regents of the University of Minnesota, Department of Bioproducts & Biosystems Engineering, Toyota Motor Corporation
    Inventors: Hongfei Jia, Ping Wang, Liting Zhang, Andreas Buthe, Xueyan Zhao, Songtao Wu, Masahiko Ishii, Minjuan Zhang
  • Patent number: 8394618
    Abstract: A substrate or coating is provided that includes a lipase with enzymatic activity toward a component of a fingerprint. Also provided is a process for facilitating the removal of fingerprints is provided wherein an inventive substrate or coating including a lipase is capable of enzymatically degrading of one or more components of the fingerprint to facilitate fingerprint removal from the substrate or said coating. Applying heat to the substrate or coating increases the rate of fingerprint removal.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: March 12, 2013
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Motor Corporation, Regents of the University of Minnesota
    Inventors: Andreas Buthe, Ping Wang, Songtao Wu, Hongfei Jia, Masahiko Ishii, Minjuan Zhang
  • Patent number: 8361768
    Abstract: A process for stabilizing a bioactive composition includes forming hydrogel matrix pores around protein molecules and reducing a water content within the hydrogel matrix pores while keeping the protein molecules biologically active.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: January 29, 2013
    Assignees: Regents of the University of Minnesota, Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Motor Corporation
    Inventors: Ping Wang, Songtao Wu, Hongfei Jia, Masahiko Ishii, Xiaodong Tong, Minjuan Zhang
  • Publication number: 20120307369
    Abstract: A process for designing and manufacturing an omnidirectional structural color (OSC) multilayer stack. The process can include providing a digital processor operable to execute at least one module and a table of index of refraction values corresponding to different materials that are usable for manufacturing an OSC multilayer stack. An initial design for the OSC multilayer stack can be provided and at least one additional layer is added to the initial design OSC multilayer stack to create a modified OSC multilayer stack. In addition, the thickness of each layer of the modified OSC multilayer stack is calculated using a merit function module until an optimized OSC multilayer stack has been calculated.
    Type: Application
    Filed: August 10, 2012
    Publication date: December 6, 2012
    Applicants: Toyota Motor Corporation, Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Debasish Banerjee, Minjuan Zhang, Songtao Wu, Masahiko Ishii
  • Patent number: 8323391
    Abstract: A paint composition is disclosed, the paint having a binder and an omnidirectional structural color pigment dispersed throughout the binder. The omnidirectional structural color pigment can be made from a plurality of flakes that have a multilayer structure, the pigment and the paint having a reflection band of less than 200 nanometers when viewed from angles between 0 to 45 degrees.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: December 4, 2012
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Debasish Banerjee, Songtao Wu, Minjuan Zhang, Masahiko Ishii
  • Patent number: 8322636
    Abstract: A process for producing particles from a thin film is provided. The process includes grinding the thin film using granules that afford for the particles to maintain a structure and/or one or more properties of the thin film. In addition, the process provides for a high recovery percentage of the source material.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: December 4, 2012
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Motor Corporation
    Inventors: Songtao Wu, Hongfei Jia, Debasish Banerjee, Minjuan Zhang, Masahiko Ishii
  • Patent number: 8324295
    Abstract: Protein-polymer compositions and processes for their production are provided where the compositions have improved resistance to ultraviolet light induced weathering and associated loss of enzyme activity. The incorporation of both a sterically hindered amine and an ultraviolet light absorber at a concentration of at least 5% by weight produces a curable or cured composition with UV stabilized enzyme activity that can be used as a bioactive coating with improved stain removal properties.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: December 4, 2012
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Motor Corporation
    Inventors: Hongfei Jia, Songtao Wu, Masahiko Ishii, Minjuan Zhang
  • Publication number: 20120301946
    Abstract: A substrate or coating is provided that includes a protease with enzymatic activity toward a component of a biological stain. Also provided is a process for facilitating the removal of a biological stain is provided wherein an inventive substrate or coating including a protease is capable of enzymatically degrading of one or more components of the biological stain to facilitate biological stain removal from the substrate or said coating.
    Type: Application
    Filed: August 6, 2012
    Publication date: November 29, 2012
    Applicants: Toyota Motor Corporation, Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Songtao Wu, Hongfei Jia, Masahiko Ishii, Minjuan Zhang
  • Publication number: 20120276617
    Abstract: Temporary active coatings that are stabilized against inactivation by weathering are provided including a base associated with a chemically modified enzyme, and, optionally a first polyoxyethylene present in the base and independent of the enzyme. The coatings are optionally overlayered onto a substrate to form an active coating facilitating the removal of organic stains or organic material from food, insects, or the environment.
    Type: Application
    Filed: April 29, 2011
    Publication date: November 1, 2012
    Applicants: TOYOTA MOTOR CORPORATION, TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventors: HONGFEI JIA, SONGTAO WU, MASAHIKO ISHII, MINJUAN ZHANG
  • Publication number: 20120256333
    Abstract: A process for manufacturing stand-alone multilayer thin films is provided. The process includes providing a substrate, depositing a sacrificial layer onto the substrate and the depositing multilayer thin film onto the sacrificial layer. Thereafter, the substrate, sacrificial layer and thin film structure are exposed to chemical solutions. The chemical solution selectively reacts with the sacrificial layer to remove the sacrificial layer, thereby affording for an intact multilayer stand-alone thin film to separate from the substrate. The color and optical properties of the multilayer thin film are not affected by the removal of the sacrificial layer.
    Type: Application
    Filed: June 20, 2012
    Publication date: October 11, 2012
    Applicants: Toyota Motor Corporation, Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Ayse Hancer-Ademuwagun, Songtao Wu, Debasish Banerjee, Minjuan Zhang, Masahiko Ishii