Patents by Inventor Masami MUNAKATA

Masami MUNAKATA 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).

  • Silver article
    Patent number: 11655522
    Abstract: Provided are a silver article formed using pure silver, which has high Vickers hardness and prohibits the occurrence of metal corrosion and the occurrence of discoloration; and its method. Disclosed are a silver article and its method, wherein the Vickers hardness is adjusted to 60 HV or higher, and when the height of the peak of 2?=38°±0.2° by an XRD is designated as h1, and that of 2?=44°±0.4° is designated as h2, h2/h1 is adjusted to 0.2 or greater.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: May 23, 2023
    Inventors: Masami Munakata, Kohtaro Munakata
  • Silver jewelry and method for producing the same
    Patent number: 11470928
    Abstract: Provided are a silver jewelry article formed using pure silver, which has high Vickers hardness and prohibit the occurrence of discoloration and its method. Disclosed are a silver jewelry article and its method, wherein the Vickers hardness is adjusted to 60 HV or higher, and when the height of the peak of 2?=38°±0.2° by an XRD is designated as h1, and that of 2?=44°±0.4° is designated as h2, h2/h1 is adjusted to 0.2 or greater.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: October 18, 2022
    Inventors: Masami Munakata, Kohtaro Munakata
  • SILVER ARTICLE
    Publication number: 20220119918
    Abstract: Provided are a silver article formed using pure silver, which has high Vickers hardness and prohibits the occurrence of metal corrosion and the occurrence of discoloration; and its method. Disclosed are a silver article and its method, wherein the Vickers hardness is adjusted to 60 HV or higher, and when the height of the peak of 2?=38°±0.2° by an XRD is designated as h1, and that of 2?=44°±0.4° is designated as h2, h2/h1 is adjusted to 0.2 or greater.
    Type: Application
    Filed: December 29, 2021
    Publication date: April 21, 2022
    Inventors: Masami MUNAKATA, Kohtaro MUNAKATA
  • Silver article and method for producing silver article
    Patent number: 11220726
    Abstract: Provided are a silver article formed using pure silver, which has high Vickers hardness and prohibits the occurrence of metal corrosion and the occurrence of discoloration; and its method. Disclosed are a silver article and its method, wherein the Vickers hardness is adjusted to 60 HV or higher, and when the height of the peak of 2?=38°±0.2° by an XRD is designated as h1, and that of 2?=44°±0.4° is designated as h2, h2/h1 is adjusted to 0.2 or greater.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: January 11, 2022
    Inventors: Masami Munakata, Kohtaro Munakata
  • SILVER ARTICLE AND METHOD FOR PRODUCING SILVER ARTICLE
    Publication number: 20210115534
    Abstract: Provided are a silver article formed using pure silver, which has high Vickers hardness and prohibits the occurrence of metal corrosion and the occurrence of discoloration; and its method. Disclosed are a silver article and its method, wherein the Vickers hardness is adjusted to 60 HV or higher, and when the height of the peak of 2?=38°±0.2° by an XRD is designated as h1, and that of 2?=44°±0.4° is designated as h2, h2/h1 is adjusted to 0.2 or greater.
    Type: Application
    Filed: January 31, 2020
    Publication date: April 22, 2021
    Inventors: Masami MUNAKATA, Kohtaro MUNAKATA
  • SILVER JEWELRY AND METHOD FOR PRODUCING THE SAME
    Publication number: 20210112931
    Abstract: Provided are a silver jewelry article formed using pure silver, which has high Vickers hardness and prohibit the occurrence of discoloration and its method. Disclosed are a silver jewelry article and its method, wherein the Vickers hardness is adjusted to 60 HV or higher, and when the height of the peak of 2?=38°±0.2° by an XRD is designated as h1, and that of 2?=44°±0.4° is designated as h2, h2/h1 is adjusted to 0.2 or greater.
    Type: Application
    Filed: January 31, 2020
    Publication date: April 22, 2021
    Inventors: Masami MUNAKATA, Kohtaro MUNAKATA