TREA

Doublet stones

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Industry

  • CPC
  • A44C17/003
This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

AHUMAN NECESSITIES A44Jewelry A44CJEWELLERY BRACELETS OTHER PERSONAL ADORNMENTS COINS A44C17/00Gems or the like

Current Industry

A44C17/003Doublet stones
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Gemstone arrangement and method for producing a gemstone arrangement
    • Patent number 11,375,779
    • Issue date Jul 5, 2022
    • REALIZATION DESAL AG
    • Michael Bonke
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    Multicolored single crystal diamond gemstones and methods for formi...
    • Patent number 9,277,792
    • Issue date Mar 8, 2016
    • Board of Trustees of Michigan State University
    • Timothy A. Grotjohn
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    Process for placing one faceted stone inside a larger faceted stone...
    • Patent number 6,649,009
    • Issue date Nov 18, 2003
    • John Kim
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Gemstone
    • Patent number 6,401,489
    • Issue date Jun 11, 2002
    • Continental Jewelry (USA), Inc.
    • Nai Yan Cheng
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    Gemstone
    • Patent number 6,305,193
    • Issue date Oct 23, 2001
    • Continental Jewelry (USA) Inc.
    • Nai Yan Cheng
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    Method of making a multiplet jewelry product with internally embedd...
    • Patent number 4,809,417
    • Issue date Mar 7, 1989
    • George Normann & Associates
    • George W. Normann
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    Multi-element pleochroic genstomes
    • Patent number 4,262,497
    • Issue date Apr 21, 1981
    • Allied Chemical Corporation
    • Robert C. Morris
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    3864939
    • Patent number 3,864,939
    • Issue date Feb 11, 1975
    • B44 - DECORATIVE ARTS
  • Information Patent Grant

    3808836
    • Patent number 3,808,836
    • Issue date May 7, 1974
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    3755025
    • Patent number 3,755,025
    • Issue date Aug 28, 1973
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    3528261
    • Patent number 3,528,261
    • Issue date Sep 15, 1970
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    2535807
    • Patent number 2,535,807
    • Issue date Dec 26, 1950
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    2090240
    • Patent number 2,090,240
    • Issue date Aug 17, 1937
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    1745607
    • Patent number 1,745,607
    • Issue date Feb 4, 1930
    • A44 - HABERDASHERY JEWELLERY
  • Information Patent Grant

    1377130
    • Patent number 1,377,130
    • Issue date May 3, 1921
    • A44 - HABERDASHERY JEWELLERY

Patents Applicationslast 30 patents