Leach & Garner Company

Leachgarner, Inc.

Other

National Chain Company

Richline Group

Hallmark Sweet, Inc.

Enewton Design, LLC

Grigory Raykhtsaum

Dwarika P Agarwal

Joseph Esposito

James R Valentine

Mark R Pitkin

David J Kinneberg

Richard V Carrano

A sterling silver alloy composition consisting of in parts by weight:

Tarnish resistant and age hardenable sterling silver alloy

The present invention is directed to a jewelry element which includes two layers&#x2014;a cladding layer and a substrate layer, each layer being its own alloy. The cladding layer and the substrate layer each include a base metal such as silver or gold at the same percentages so that the resulting jewelry element can be labeled in accordance with one or more industry-wide requirements. The cladding layer is further enhanced by introduction of a metal providing additional hardness when included in the alloy. By limiting the 'hardness' metal or metals to being deposed only in the cladding layer, less of the hardness metal need be used, thereby reducing cost yet retaining the requisite hardness characteristic. Each of the alloys may further contain other metals for any of a number of reasons, including but not limited to, tarnish resistance.

Age hardenable clad metal having gold fineness and a surface layer with enhanced resistance to tarnish, scratching, and wear

The present invention is directed to an alloy usable for jewelry applications in which the color can be classified as white, the alloy contains both platinum and palladium and is at a metal cost or lower than that of traditional palladium-containing jewelry alloys, and is commercially age hardenable through heat treatment.

18K palladium and platinum containing age hardenable white gold alloy

The present invention is directed to a formulation of one or more low silver containing alloys (including those with silver content below 50 weight %, 'w %') that show one of the group of distinct pink, yellow and green colors and further demonstrate enhanced resistance to tarnish and other beneficial features described herein.

Fancy color silver containing alloys

Age hardenable clad metal having silver fineness and a surface layer with enhanced resistance to tarnish, scratching, and wear

Pink colored silver containing alloys

A silver-based alloy composition which is soft and workable in an annealed condition, is hardenable through heat treatment, and is tarnish resistant. The preferred embodiment of the composition of the present invention includes a small percentage of palladium and a reduction from typical percentages of copper found in a sterling silver alloy. In one embodiment the silver-based alloy includes no copper at all.

Reversibly age hardenable, palladium containing tarnish resistant sterling silver alloys

Rose-color and yellow-color gold alloys are formed from a gold-base alloy containing silver and copper. Mining these elements is usually highly detrimental to the environmental. Environmentally friendly alloys are obtained through the use of recycled elements and elements recovered from mines utilizing specific guidelines. Jewelry manufactured from these environmentally friendly alloys may be more receptive to a consumer, resulting in a competitive advantage.

Gold alloy compositions formed by environmentally friendly process

A skin integrated device for implantation with an improved device-skin interface for the ingrowths of skin cells and tissues throughout the pores, having a solid frame, which may also be permeable. The characteristics of pore size, porosity and size of the compressed and sintered particles constitute a long-term skin integrated device for transfer of vital and therapeutic substances, and necessary forces and moments from the outer delivery and prosthetics devices to the human body. The ingrowth of the skin along with the intermittent layer of fine silver provides a barrier for infection.

Skin integrated device

Improved 14-karat rose-colored gold alloy compositions include: about 58.5% gold; about 9.0-12.0% silver; about 0.0-0.2% zinc; about 0.3-0.4% cobalt; about 0.0-0.02% iridium; and about 29.0-33.0% copper. Improved 18-karat rose-colored gold alloy compositions include: about 75.2% gold; about 7.0% silver; about 0.0-0.2% zinc; about 0.3-0.4% cobalt; about 0.0-0.02% iridium; and about 17.0-17.5% copper. The hardness of these compositions are capable of being selectively changed between their respective annealed-hardness and age-hardness values. The color of these compositions is between about 5-7 CieLab a* color units and between about 17-21 CieLab b* color units.

Rose-colored gold alloy compositions with reversible hardness characteristics

A sterling silver alloy composition of exceptional and reversible hardness and enhanced tarnish resistance, consists essentially of the following parts by weight: at least about 92.5% silver; about 4.4% to about 5.25% copper; about 0% to about 1.0% zinc; about 0.85% tin; about 0.05% to about 0.3% lithium; about 0.05% to about 0.5% silicon; about 0% to about 1.2% germanium; and about 0% to about 0.02% boron.

Sterling silver alloy compositions of exceptional and reversible hardness, and enhanced tarnish resistance

A nickel-free white gold alloy composition having selectively reversible hardness characteristics between its annealed- and aged-hardness values, consists essentially of: about 55&#x2013;60% gold; about 6.0&#x2013;10.0% palladium; about 5.0&#x2013;12.0% copper; about 0.1&#x2013;2.0% zinc; and about 20&#x2013;30% silver. A 14-karat nickel-free white gold alloy composition, consists essentially of: about 58.5% gold; about 25.0&#x2013;27.15% silver; about 6.0% palladium; about 5.0&#x2013;12.0% copper; about 0&#x2013;2.0% zinc; about 0&#x2013;0.2% cobalt; about 0&#x2013;0.005% iridium; and about 0&#x2013;0.01% lithium.

Nickel-free white gold alloy compositions with reversible hardness characteristics

A 14-karat gold alloy composition having a desirable yellow color and with reversible hardness contains about 58.65 weight percent gold, about 11.5-25.0 weight percent silver, about 11.85-23.35 weight percent copper, and about 2-7 weight percent zinc. The color of the composition has a value of between about &minus;3.0 to about 0.5 CieLab a* color units, and has a value of between about &plus;20.0 to about 22.0 CieLab b* color units. The alloy has a hardness ratio between about 0.4-2.0, and color ratio of less than about 1.0.

14-karat gold alloy compositions having enhanced yellow color, reversible hardness, and fine grain structure

An improved 18-karat green gold alloy composition comprises about 75.0% gold; about 6.0-7.0% silver; about 9.0-11.7% copper; and about 6.5-9.0% zinc. The improved alloys are capable of being age-hardened to a hardness of about 240 VHN by being heated to about 550&deg; F. for about one hour, and thereafter being permitted to cool in air. The hard-nesses of the alloys are reversible between their aged-hardness and annealed-hardness values. The color of said composition is between about &minus;1.5 to about &minus;3.0 CieLab a* color units, and between about 19 to about 26 CieLab b* color units.

18-karat green gold alloy compositions

A hardenable white gold alloy consists essentially of about 55-60 % gold, about 12-20% silver, about 8-15% copper, about 8-18% palladium, about 0.0-1.0% tin, zinc indium or cobalt, and, optionally, about 0.005-0.02% iridium and/or ruthenium, and also about 0.01-0.03 weight percent lithium. The alloy is nickel-free, but has a pleasing white color similar to that of nickel-containing white gold alloys. The alloy has a fine grain structure, a lower hardness in its annealed condition, but is capable of being hardened to an exceptional hardness value. The hardening procedure is reversible.

Growing community of inventors

Sharon, MA, United States of America

Grigory Raykhtsaum