Patents by Inventor Yukoh Takanashi

Yukoh Takanashi 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).

  • Surface treatment liquid for zinc-based metal material and method for surface-treating zinc-based metal material
    Patent number: 8524323
    Abstract: Disclosed is a surface treatment liquid containing no chromium compound, which is capable of imparting a zinc-based material with adequate corrosion resistance without coating, namely adequate bare corrosion resistance. Specifically disclosed is a surface treatment liquid for zinc-based metal materials, which contains the following component (A) and component (B): (A) at least one metal element selected from the group consisting of Ti, Zr and Hf; and (B) at least one compound selected from the group consisting of allylamino compounds, imino compounds, amino polysaccharides, amino-modified phenols and derivatives of them. The total concentration of the metal elements of the component (A) is 500-2000 mg/L, and the total concentration of the compounds of the component (B) is 300-3000 mg/L.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: September 3, 2013
    Inventors: Hidenori Nagai, Ryosuke Kawagoshi, Yukoh Takanashi
  • SURFACE TREATMENT LIQUID FOR ZINC-BASED METAL MATERIAL AND METHOD FOR SURFACE-TREATING ZINC-BASED METAL MATERIAL
    Publication number: 20100028541
    Abstract: Disclosed is a surface treatment liquid containing no chromium compound, which is capable of imparting a zinc-based material with adequate corrosion resistance without coating, namely adequate bare corrosion resistance. Specifically disclosed is a surface treatment liquid for zinc-based metal materials, which contains the following component (A) and component (B): (A) at least one metal element selected from the group consisting of Ti, Zr and Hf; and (B) at least one compound selected from the group consisting of allylamino compounds, imino compounds, amino polysaccharides, amino-modified phenols and derivatives of them. The total concentration of the metal elements of the component (A) is 500-2000 mg/L, and the total concentration of the compounds of the component (B) is 300-3000 mg/L.
    Type: Application
    Filed: October 9, 2009
    Publication date: February 4, 2010
    Applicant: Henkel AG & Co. KGaA
    Inventors: Hidenori Nagai, Ryosuke Kawagoshi, Yukoh Takanashi