A44C 17/003
Doublet stones
Official title: {Doublet stones}
A44C17/003 (Doublet stones) appears on 7 US grants and 8 published applications in this corpus.
Search patents in A44C- Granted patents
- 7
- Published applications
- 8
- Assignees
- 5
- Inventors
- 17
- Latest grant
- 5 Jul 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Gemstone arrangement and method for producing a gemstone arrangement5 Jul 2022US 11,375,779 B2Realization Desal AG
- Multicolored single crystal diamond gemstones and methods for forming the same8 Mar 2016US 9,277,792 B2Board of Trustees of Michigan State University
- Process for placing one faceted stone inside a larger faceted stone to form a single jewelry stone18 Nov 2003US 6,649,009 B1
- Gemstone11 Jun 2002US 6,401,489 B1Continental Jewelry (USA) Inc.
- Gemstone23 Oct 2001US 6,305,193 B1Continental Jewelry (USA) Inc.
- Gemstone arrangement and method for producing a gemstone arrangement22 Apr 2021US 2021/0112930 A1Realization Desal AG
- Ornamental device comprising a stone8 Jan 2015US 2015/0007610 A1
- Composite gemstone and method of production thereof4 Dec 2014US 2014/0352354 A1
- Custom stones and methods for producing custom stones for jewelry3 May 2012US 2012/0103016 A1
- Single crystal diamond gemstones and methods therefor1 Mar 2012US 2012/0047950 A1Board of Trustees of Michigan State University
Most cited
By later US patents
- Method of making a multiplet jewelry product with internally embedded visual indicia56US 4,809,417 AGeorge Normann & Associates · 1989
- Process for placing one faceted stone inside a larger faceted stone to form a single jewelry stone31US 6,649,009 B12003
- Gemstone15US 6,305,193 B1Continental Jewelry (USA) Inc. · 2001
- Gemstone15US 6,401,489 B1Continental Jewelry (USA) Inc. · 2002
- Multi-element pleochroic genstomes4US 4,262,497 AAllied Chemical Corporation · 1981