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David H. Sturgis
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North Muskegon, MI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method for processing casting materials to increase slurry lifetime
Patent number
6,920,913
Issue date
Jul 26, 2005
PCC Structurals, Inc.
Mehrdad Yasrebi
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Method for imaging inclusions in investment castings
Patent number
6,619,368
Issue date
Sep 16, 2003
PCC Structurals, Inc.
Mark E. Springgate
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method for processing materials to increase slurry lifetime
Patent number
6,390,179
Issue date
May 21, 2002
PCC Structurals, Inc.
Mehrdad Yasrebi
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Polymeric organic carbonate materials useful as fillers for investm...
Patent number
6,326,429
Issue date
Dec 4, 2001
PCC Structurals, Inc.
David Howard Sturgis
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method for imaging inclusions in investment castings
Patent number
6,102,099
Issue date
Aug 15, 2000
PCC Structurals, Inc.
David Howard Sturgis
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Investment casting brittle, reactive materials
Patent number
6,024,163
Issue date
Feb 15, 2000
Precision Castparts Corp.
Mark Edwin Springgate
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Infiltration method for producing shells useful for investment casting
Patent number
5,927,379
Issue date
Jul 27, 1999
PCC Structurals, Inc.
Mehrdad Yasrebi
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method for stabilizing ceramic suspensions
Patent number
5,643,844
Issue date
Jul 1, 1997
Precision Castparts Corporation
Mehrdad Yasrebi
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Method for stabilizing ceramic suspensions
Patent number
5,624,604
Issue date
Apr 29, 1997
Mehrdad Yasrebi
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Yttria-zirconia slurries and mold facecoats for casting reactive me...
Patent number
5,464,797
Issue date
Nov 7, 1995
Precision Castparts Corporation
Mehrdad Yasrebi
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Yttria-zirconia slurries and mold facecoats for casting reactive me...
Patent number
5,407,001
Issue date
Apr 18, 1995
Precision Castparts Corporation
Mehrdad Yasrebi
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Refractory composition and method for metal casting
Patent number
4,996,175
Issue date
Feb 26, 1991
Precision Castparts Corp.
David H. Sturgis
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Method for recovering casting refractory compositions from investme...
Patent number
4,815,516
Issue date
Mar 28, 1989
Precision Castparts Corp.
David H. Sturgis
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method for recovering casting refractory compositions from investme...
Patent number
4,799,530
Issue date
Jan 24, 1989
Precision Castparts Corp.
David H. Sturgis
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Metal casting mold with bonded particle filter
Patent number
3,981,352
Issue date
Sep 21, 1976
Howmet Corporation
John I. Nurminen
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Casting of high melting point metals and cores therefor
Patent number
3,957,715
Issue date
May 18, 1976
Howmet Corporation
Nick G. Lirones
B22 - CASTING POWDER METALLURGY
Patents Applications
last 30 patents
Information
Patent Application
Method and composition for solvent extraction of material from a mo...
Publication number
20040138049
Publication date
Jul 15, 2004
PCC Structurals, Inc.
Mehrdad Yasrebi
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Application
Method for processing casting materials to increase slurry lifetime
Publication number
20040007345
Publication date
Jan 15, 2004
PCC Structurals, Inc.
Mehrdad Yasrebi
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
Method for imaging inclusions in investment castings
Publication number
20030205359
Publication date
Nov 6, 2003
PCC Structurals, Inc.
Mark E. Springgate
G01 - MEASURING TESTING
Information
Patent Application
Filters for filtering molten metals and alloys field
Publication number
20030150294
Publication date
Aug 14, 2003
Njall Stefansson
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Method for imaging inclusions in investment castings
Publication number
20030136540
Publication date
Jul 24, 2003
Mark E. Springgate
G01 - MEASURING TESTING