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For the Inventor, By the Inventor

North Attleboro, MA, United States of America

Leach & Garner Company


USPTO Granted Patents = 20

Trademarks = 2

Forward Citations = 175

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18 inventors (with patents filed for the assignee):

goldMedal Dwarika P Agarwal (11 out of 14 patents)

silverMedal Grigory Raykhtsaum (7 out of 17 patents)

bronzeMedal Ronald E Precourt, Jr (4 out of 4 patents)

4.  Edwin F Leach, Ii (3 out of 3 patents)

5.  Maria H Garcia (2 out of 2 patents)

6.  Thomas W Eagar (2 out of 14 patents)

7.  Laura L Bourguignon (2 out of 3 patents)

8.  Michael A Gayton (2 out of 2 patents)

9.  Marinko Markic (2 out of 2 patents)

10.  Rosaire Marcotte (2 out of 2 patents)

11.  Guy B Alexander (1 out of 4 patents)

12.  Ravindra A Nadkarni (1 out of 1 patent)

13.  Christopher J Cannata (1 out of 1 patent)

14.  Robert E Chatel (1 out of 1 patent)

15.  Thomas J McDonald (1 out of 1 patent)


20 patents:

1. 7413705 - Rose-colored gold alloy compositions with reversible hardness characteristics (2008-08-19),
2. 7198683 - Sterling silver alloy compositions of exceptional and reversible hardness, and enhanced tarnish resistance (2007-04-03),
3. 7135078 - Nickel-free white gold alloy compositions with reversible hardness characteristics (2006-11-14),
4. 6676776 - 14-karat gold alloy compositions having enhanced yellow color, reversible hardness, and fine grain structure (2004-01-13),
5. 6463759 - Jewelry finding for producing a necklace having a twisted appearance (2002-10-15),
6. 6406568 - 18-karat green gold alloy compositions (2002-06-18),
7. 5919320 - Nickel-free white gold alloy with reversible hardness characteristics (1999-07-06),
8. 5782108 - Springless jewelry finding (1998-07-21),
9. 5746067 - Round bangle (1998-05-05),
10. 5598722 - Bangle closing mechanism (1997-02-04),
11. D358114 - Chain end cap (1995-05-09),
12. 5412848 - Clip mechanism having outwardly biased leg members (1995-05-09),
13. 5257513 - Ball earring process and construction (1993-11-02),
14. 5180551 - Gold alloys of exceptional yellow color and reversible hardness (1993-01-19),
15. 5134039 - Metal articles having a plurality of ultrafine particles dispersed (1992-07-28),
Leach & Garner Company is a leading manufacturer and distributor of precious metals and findings. With over 100 years of experience, we provide high-quality products and exceptional customer service to the jewelry industry worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

20 Patents

#1 in North Attleboro, MA

#941 in Massachusetts

#15,856 in US

#30,316 in the World

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North Attleboro, MA, United States of America

Leach & Garner Company

Forward Citations = 175

18 inventors:

goldMedal Dwarika P Agarwal (11 out of 14 patents)

silverMedal Grigory Raykhtsaum (7 out of 17 patents)

bronzeMedal Ronald E Precourt, Jr (4 out of 4 patents)

4.  Edwin F Leach, Ii (3 out of 3 patents)

5.  Maria H Garcia (2 out of 2 patents)

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