Clyde E Ingersoll Deceased7682 Austin Rd, Friendship, NY 14739

6913656, Jul 5, 2005

Aug 11, 2003

10/638833

Dasgupta Tridib - Williamsville NY, US
Clyde Ingersoll - Tonawanda NY, US

Ivoclar Vivadent, Inc. - Amherst NY

C22C005/00

148430, 420508, 420509, 420510

An alloy is provided for dental porcelain fused to metal restorations, having a rich gold color and light oxide coating for bonding the porcelain to the cast alloy substrate. The alloy has suitable mechanical properties for the support of the porcelain and is readily polished to a bright sheen. The alloy includes from 96 to 98 weight % Au with up to 3 weight % Pt, Pd, Ru, Ir, or combinations thereof and 0 to 1. 5 wt % In, Sn, Fe, Mn, Cu, B, or combinations thereof.

2008007, Mar 20, 2008

Aug 28, 2007

11/892933

Tridib Dasgupta - E. Amherst NY, US
Clyde Ingersoll - Tonawanda NY, US
George Tysowsky - E. Amherst NY, US

Ivoclar Vivadent, Inc. - Amherst NY

B32B 15/04
C22C 19/07
C22C 5/04

428615, 420435, 420436, 420463

An alloy is provided based on a palladium-cobalt binary system, has a coefficient of thermal expansion (CTE) of about 14.0 to about 15.5 and may include one or more of the following additive metals: aluminum, boron, chromium, gallium, lithium, rhenium, ruthenium, silicon, tantalum, titanium, and tungsten.

2008007, Mar 20, 2008

Oct 6, 2006

11/543917

Tridib Dasgupta - E. Amherst NY, US
Clyde Ingersoll - Tonawanda NY, US
George Tysowsky - E. Amherst NY, US

Ivoclar Vivadent, Inc. - Amherst NY

A61C 5/08

4332221, 433218

An alloy s provided for dental prostheses including porcelain fused to metal (PFM) restorations. The alloy is grey in color with an oxide coating for bonding porcelain to the oxidized cast alloy substrate. The alloy has suitable mechanical properties for cast prostheses and for the support of the porcelain and is readily polished to a bright sheen. The alloy is based on a palladium-cobalt binary system, has a coefficient of thermal expansion (CTE) in the range of about 14.0 to 15.3 and may include one or more of the following additive metals: aluminum, boron, chromium, gallium, lithium, rhenium, ruthenium, silicon, tantalum, titanium, and tungsten.

4399096, Aug 16, 1983

Jun 7, 1982

6/385700

Dwarika P. Agarwal - Williamsville NY
Clyde E. Ingersoll - Tonawanda NY

Williams Gold Refining Company Incorporated - Buffalo NY

C22C 3000
C22C 504
C22C 1903

420463

A brazing alloy composition for joining chromium containing base metal alloys containing, by weight, palladium about 39%-60%, nickel about 20%-47. 5%, and at least one element selected from the group consisting of silver 0-35%, tin 0-32%, indium 0-32% and gallium 0-11%; and optionally containing one or more elements selected from the group consisting of gold 0-10%, germanium 0-4. 4%, silicon 0-2. 9% and about 0. 025% of a known deoxidizer such as lithium. The alloy exhibits good wetting and flowing characteristics and has excellent strength and corrosion resistance at elevated temperatures. The brazing alloy is particularly useful for joining chromium containing baese metal alloys of the type which are used in the porcelain-fused-to-metal technic in dental prosthetics.

4804517, Feb 14, 1989

Apr 22, 1987

7/041221

Stephen P. Schaffer - Hamburg NY
Clyde E. Ingersoll - Tonawanda NY

Williams Dental Company, Inc. - Buffalo NY

C22C 3002
C22C 3000

420587

A yellow dental alloy containing a colored intermetallic compound of palladium and indium as 15-85% by weight of the alloy and at least 10% by weight of silver and as desired gold 0-30%, copper 0-45% and silver 10-50%. This alloy exhibits a pale yellow gold color which it derives from the interaction of two white colored metals--palladium and indium. Various alloying additions are specified to improve castability, ductility, strength, hardness, tarnish and corrosion resistance.

4943483, Jul 24, 1990

Jan 25, 1989

7/301139

Clyde E. Ingersoll - Tonawanda NY
Stephen P. Schaffer - Hamburg NY
Patrick J. McCabe - Tonawanda NY

Williams Dental Company, Inc. - Buffalo NY

B32B 1504
C22C 504

428433

Dental restorations are made of a high palladium alloy which consists essentially of, on a weight basis, 70-82 percent palladium; 5-8 percent gold; 6. 5-8 weight percent silver; 5-9 percent gallium; from 4 to 8 weight percent of a surface oxide producing modifier selected from the group consisting of indium, tin and mixtures thereof, from 0. 01 up to 2 percent, ordinarily less than about 0. 5 percent, of an oxygen scavenging component which is a member selected from the group consisting of germanium, lithium and mixtures thereof; and up to 2 percent of a grain refiner selected from the group consisting of ruthenium, rhenium and iridium. Alloy can be melted without the need of shielding the alloy from the atmosphere.

4249943, Feb 10, 1981

Oct 11, 1978

5/950430

M. Hamdi A. Mohammed - Gainesville FL
Dwarika P. Agarwal - Williamsville NY
Clyde E. Ingersoll - Tonawanda NY

Williams Gold Refining Company Incorporated - Buffalo NY

C22C 1905

75171

An alloy composition for dental use containing, by weight, aluminum 0-3. 0%, cobalt 0-20. 0%, chromium 10. 0-20. 0%, manganese 0-1. 5%, molybdenum 6. 0-18. 0%, nickel 58. 5-77. 0% and silicon 0-2. 0%. The alloy retains the corrosion resistance properties found in nickel-chromium base alloys while having reduced yield strength typical of gold alloys thereby resulting in greater ease of grinding, polishing and manipulation. The alloy finds use as a porcelain substrate alloy and also as a crown and bridge or partial denture alloy.

4201577, May 6, 1980

Nov 8, 1978

5/958563

Clyde E. Ingersoll - Tonawanda NY
Dwarika P. Agarwall - Williamsville NY

Williams Gold Refining Company Incorporated - Buffalo NY

C22C 502

75134N

An alloy composition enabling the amount of silver therein to be limited significantly or preferably eliminated altogether while maintaining the castability, strength properties and physical properties including melting range and coefficient of thermal expansion compatible with available porcelain products. The alloy composition contains, by weight, silver 0-11. 0%, aluminum 0-1%, gold 31. 8-63. 16%, boron 0-0. 13%, calcium 0-0. 12%, copper 0-5. 0%, iron 0-0. 75%, gallium 0-5. 0%, indium 0. 5-10. 55%, lithium 0-0. 04%, nickel 0-2%, palladium 28. 96-57. 97%, rhenium 0-0. 25%, ruthenium 0-1. 8%, silicon 0-0. 0125%, tin 0-7. 5%, titanium 0-0. 06%, vanadium 0-0. 12% and zinc 0-1. 98%.