Patents by Inventor Theodore Kosa
Theodore Kosa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20100108203Abstract: A stainless steel strip article is disclosed. The article is formed from a corrosion resistant alloy having the following composition in weight percent, about: C 0.03 max. Mn 1.0 max. Si 0.75 max. P 0.040 max. S 0.020 max. Cr 10.9-11.1 Ni 10.9-11.1 Mo 0.9-1.1 Ti 1.5-1.6 Al 0.25 max. Nb 0.7-0.8 Cu 1 max. B 0.010 max. N 0.030 max. The balance is iron and usual impurities. The elongated thin strip article provides a room temperature tensile strength of at least about 280 ksi in the solution treated and age hardened condition. A method of making the strip article and a method of using it to make a golf club are also disclosed.Type: ApplicationFiled: October 30, 2009Publication date: May 6, 2010Inventors: Theodore Kosa, David E. Wert
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Publication number: 20090263270Abstract: A corrosion-resistant, free-machining, magnetic stainless steel alloy is described. The alloy has the following weight percent composition: 0.025 max. C, 0.60 max. Mn, 1.0-2.0 Si, 0.035 max. P, 0.15-0.40 S, 12.0-14.0 Cr, 0.5 max. Ni, 0.5-1.3 Mo, 0.5-1.3 V, 0.5 max. Cu, 0.020 max. Al, 0.025 max. N, and the balance is iron and usual impurities.Type: ApplicationFiled: July 1, 2009Publication date: October 22, 2009Inventor: Theodore Kosa
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Publication number: 20070166183Abstract: A corrosion-resistant, free-machining, magnetic stainless steel alloy is described. The alloy has the following weight percent composition: 0.025 max. C, 0.60 max. Mn, 1.0-2.0 Si, 0.035 max. P, 0.15-0.40 S, 12.0-14.0 Cr, 0.5 max. Ni, 0.5-1.3 Mo, 0.5-1.3 V, 0.5 max. Cu, 0.020 max. Al, 0.025 max. N, and the balance is iron and usual impurities.Type: ApplicationFiled: January 18, 2006Publication date: July 19, 2007Applicant: CRS HOLDINGS INC.Inventor: Theodore Kosa
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Patent number: 6630103Abstract: A precipitation hardenable stainless steel having the following weight percent composition is disclosed. C 0.030 max. Mn 0.5 max. Si 0.5 max. P 0.040 max. S 0.025 max. Cr 9-13 Ni 7-9 Mo 3-6 Cu 0.75 max. Co 5-11 Ti 1.0 max. Al 1.0-1.5 Nb 1.0 max. B 0.010 max. N 0.030 max. O 0.020 max. The balance of the alloy is essentially iron and the usual impurities. One or more rare earth metals or calcium may be included in the alloy for removing and/or stabilizing phosphorus and sulfur. The alloy provides a unique combination of strength, toughness, and ductility. In accordance with another aspect of the present invention, there is described a useful article such as an aircraft structural component or a golf club head that is formed, at least in part, from the aforesaid alloy.Type: GrantFiled: March 26, 2002Date of Patent: October 7, 2003Assignee: CRS Holding, Inc.Inventors: James W. Martin, Theodore Kosa
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Publication number: 20030049153Abstract: A precipitation hardenable stainless steel having the following weight percent composition is disclosed. 1 C 0.030 max. Mn 0.5 max. Si 0.5 max. P 0.040 max. S 0.025 max. Cr 9-13 Ni 7-9 Mo 3-6 Cu 0.75 max. Co 5-11 Ti 1.0 max. Al 1.0-1.5 Nb 1.0 max. B 0.010 max. N 0.030 max. O 0.020 max.Type: ApplicationFiled: March 26, 2002Publication date: March 13, 2003Inventors: James W. Martin, Theodore Kosa
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Patent number: 6461452Abstract: A free-machining, precipitation-hardenable, martensitic stainless steel is described that provides a unique combination of machinability, processability, and toughness. The broad compositional range of the steel alloy of the invention is as follows, in weight percent: C 0.030 max. Mn 0.75 max. Si 0.75 max.. P 0.040 max. S 0.15-0.35 Cr 14.0-15.5 Ni 5.0-6.0 Mo 0.50-1.2 Cu 3.0-4.0 Nb 0.10-0.30 B 0.010 max. N 0.030 max. The balance of the alloy is iron and the usual impurities found in commercial grades of martensitic precipitation-hardening stainless steels intended for similar use or service.Type: GrantFiled: May 16, 2001Date of Patent: October 8, 2002Assignee: CRS Holdings, Inc.Inventor: Theodore Kosa
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Patent number: 6238455Abstract: A powder metallurgy article formed of a sulfur-containing, precipitation-hardenable, stainless steel alloy is described. The article has a unique combination of strength, ductility, processability, and machinability. The powder metallurgy article is formed of a stainless steel alloy having the following composition in weight percent. C 0.03 max. Mn 1.0 max. Si 0.75 max. P 0.040 max. S 0.010-0.050 Cr 10-14 Ni 6-12 Ti 0.4-2.5 Mo 6 max. B 0.010 max. Cu 4 max. Co 9 max. Nb 1 max. Al 1 max. Ta 2.5 max. N 0.03 max. The balance of the alloy is iron and the usual impurities. The powder metallurgy article according to this invention is characterized by a fine dispersions of titanium sulfides that are not greater than about 5 &mgr;m in major dimension. A method of preparing the powder metallurgy article is also described.Type: GrantFiled: October 22, 1999Date of Patent: May 29, 2001Assignee: CRS Holdings, Inc.Inventors: Robert S. Brown, Gregory J. Del Corso, Theodore Kosa, James W. Martin
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Patent number: 6146475Abstract: A corrosion resistant, martensitic stainless steel alloy is disclosed having the following composition in weight percent.______________________________________ wt. % ______________________________________ Carbon 0.06-0.10 Manganese 0.50 max. Silicon 0.40 max. Phosphorus 0.060 max. Sulfur 0.15-0.55 Chromium 12.00-12.60 Nickel 0.25 max. Molybdenum 0.10 max. Copper 0.50 max. Nitrogen 0.04 max. ______________________________________and the balance is essentially iron. This alloy provides a unique combination of form tool machinability, corrosion resistance, and hardenability, particularly in the annealed condition (100 HRB max.). The alloy is capable of being hardened to at least 35 HRC.Type: GrantFiled: March 22, 1999Date of Patent: November 14, 2000Assignee: CRS Holdings, Inc.Inventor: Theodore Kosa
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Patent number: 5837190Abstract: The present invention relates to an austenitic stainless steel alloy and in particular to a resulfurized austenitic stainless steel alloy, and an article made therefrom, having a unique combination of corrosion resistance, machinability and low magnetic permeability, especially in the cold worked condition.Type: GrantFiled: December 17, 1996Date of Patent: November 17, 1998Assignee: CRS Holdings, Inc.Inventors: Theodore Kosa, John H. Magee, Jr., James W. Martin, Ronald P. Ney, Sr.
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Patent number: 5681528Abstract: A precipitation hardenable, martensitic stainless steel alloy is disclosed consisting essentially of, in weight percent, about______________________________________ C 0.03 max Mn 1.0 max Si 0.75 max P 0.040 max S 0.020 max Cr 10-13 Ni 10.5-11.6 Ti 1.5-1.8 Mo 0.25-1.5 Cu 0.95 max Al 0.25 max Nb 0.3 max B 0.010 max N 0.030 max ______________________________________the balance essentially iron. The disclosed alloy provides a unique combination of stress-corrosion cracking resistance, strength, and notch toughness.Type: GrantFiled: September 25, 1995Date of Patent: October 28, 1997Assignee: CRS Holdings, Inc.Inventors: James W. Martin, Theodore Kosa, Bradford A. Dulmaine
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Patent number: 5601664Abstract: A ferritic, stainless steel alloy containing in weight percent about 0.05% max. C, 2.0% max. Mn, 0.70-1.5% Si, 0.1-0.5% S, 15-20% Or, 0.80-3.00% Mo, 0.10-1.0% Nb, 0.06% max. N, and the balance iron and impurities, provides a unique combination of magnetic properties, corrosion resistance, and machinability.Type: GrantFiled: November 8, 1995Date of Patent: February 11, 1997Assignee: CRS Holdings, Inc.Inventors: Theodore Kosa, Stephen M. Lukes, Douglas W. Dietrich, Terry A. DeBold
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Patent number: 5512238Abstract: An austenitic, stainless steel alloy consists essentially of, in weight percent, about:______________________________________ C 0.030 max Mn 2.0 max Si 1.0 max P 0.05 max S 0.02-0.05 Cr 16.0-20.0 Ni 9.8-14.0 Mo 3.0 max Cu 0.8-1.5 N 0.035 max ______________________________________up to about 0.75 weight percent of an element selected from the group consisting of Ti and Cb, and the balance is essentially iron, wherein Cb is not more than about 0.1 weight percent when Ti.gtoreq.(5.times.% C.) and Ti is not more than about 0.1 weight percent when Cb.gtoreq.(10.times.% C.). The alloy provides a unique combination of machinability, corrosion resistance, formability, and mechanical properties.Type: GrantFiled: June 7, 1995Date of Patent: April 30, 1996Assignee: CRS Holdings, Inc.Inventors: Theodore Kosa, John H. Magee, Jr.
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Patent number: 5482674Abstract: An austenitic, stainless steel alloy having a unique combination of machinability and a low magnetic permeability, especially in the cold worked condition, is disclosed consisting essentially of, in weight percent, about______________________________________ C 0.l035 max Mn 1.0-4.0 Si 1.0 max P 0.2 max S 0.15-0.45 Cr 16.0-20.0 Ni 9.2-12.0 Mo 1.5 max Cu 0.8-2.0 N 0.035 max Se 0.1 max ______________________________________with the balance essentially iron.Type: GrantFiled: July 7, 1994Date of Patent: January 9, 1996Assignee: CRS Holdings, Inc.Inventors: Theodore Kosa, John H. Magee, Jr., James W. Martin, Ronald P. Ney, Sr.
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Patent number: 5362337Abstract: A martensitic stainless steel alloy having a good combination of machinability, hardness capability, and corrosion resistance is disclosed which contains, in weight percent, about:______________________________________ Preferred A Preferred B Preferred C ______________________________________ C up to 0.07 up to 0.07 up to 0.07 N up to 0.07 up to 0.07 up to 0.07 C + N up to 0.08 up to 0.08 up to 0.08 Cu 1.0-3.0 1.0-3.5 1.0-3.5 delta ferrite up to 11 up to 3 7-11 Cr 10.0-14.0 10.0-14.0 10.0-14.0 S 0.15-0.55 0.15-0.55 0.15-0.55 Mn up to 1.25 up to 1.25 up to 1.25 Si up to 1.0 up to 1.0 up to 1.0 P up to 0.06 up to 0.06 up to 0.06 Ni up to 1.0 up to 1.0 up to 1.0 Mo up to 1.0 up to 1.0 up to 1.0 B up to 0.01 up to 0.01 up to 0.01 Te up to 0.10 up to 0.10 up to 0.10 Se up to 0.25 up to 0.25 up to 0.25 Bi up to 0.15 up to 0.15 up to 0.15 Nb up to 0.10 up to 0.10 up to 0.10 ______________________________________and the balance is essentially iron.Type: GrantFiled: September 28, 1993Date of Patent: November 8, 1994Assignee: CRS Holdings, Inc.Inventor: Theodore Kosa
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Patent number: 5308577Abstract: An austenitic, non-magnetic, stainless steel alloy is disclosed which, in the wrought condition, is essentially ferrite-free and has a relative magnetic permeability of less than about 1.02, a room temperature 0.2% yield strength of at least about 100 ksi, and good resistance to stress corrosion cracking in chloride environments. Broad, intermediate, and preferred ranges are disclosed as follows:______________________________________ w/o Broad Intermediate Preferred ______________________________________ C 0.08 max. 0.05 max. 0.035 max. Mn 14-19 15-18 16-18 Si 1.0 max. 1.0 max. 0.75 max. Cr 12-21 14-19.5 16-18 Ni 3.5 2.5 max. 1.5 max. Mo 0.5-4 0.75-2.5 1.0-2.0 Cu 2.0 max. 1.5 max. 1.0 max. N 0.2-0.8 0.3-0.7 0.4-0.6 B 0.06 max. 0.005 max. 0.005 max. ______________________________________the balance being iron.Type: GrantFiled: September 23, 1992Date of Patent: May 3, 1994Assignee: CRS Holdings, Inc.Inventors: Bradford A. Dulmaine, Theodore Kosa, John H. Magee, Jr., Donald K. Schlosser
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Patent number: 5254184Abstract: A duplex stainless steel having a good combination of galling resistance and corrosion resistance is disclosed containing in weight percent about:______________________________________ Broad Intermediate Preferred ______________________________________ C 0.1 Max. 0.05 Max. 0.025 Max. Mn 0-6 1-4 1-3 Si 2.5-6 3-6 4-5 Cr 16-24 17-22 18-21 Ni 2-12 6-10 7-9 Mo 4 Max. 0.5-3 1.0-2 N 0.07-0.30 0.10-0.25 0.15-0.20 ______________________________________and the balance of the alloy is essentially iron. In the annealed condition the alloy is limited to about 15-50% v/o ferrite. To attain its good galling resistance, the alloying elements are balanced so that the % Ni+0.68 (% Cr)+0.55 (% Mn)+0.45 (% Si)+(% C+% N)+% Mo+0.2 (% Co), is at least about 27.5, and the Ni/Si ratio is not more than about 2.5.Type: GrantFiled: June 5, 1992Date of Patent: October 19, 1993Assignee: Carpenter Technology CorporationInventors: John H. Magee, Jr., Theodore Kosa, Donald K. Schlosser
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Patent number: 5094812Abstract: An austenitic, non-magnetic, stainless steel alloy and articles made therefrom are disclosed which, in the wrought condition, are essentially ferrite-free and have a relative magnetic permeability of less than about 1.02, a room temperature 0.2% yield strength of at least about 100 ksi, and good resistance to stress corrosion cracking in chloride environments. Broad, intermediate, and preferred ranges are disclosed as follows:______________________________________ w/o Broad Intermediate Preferred ______________________________________ C 0.08 max. 0.05 max. 0.035 max. Mn 14-19 15-18 16-18 Si 1 max. 1 max. 0.75 max. Cr 12-21 14-19.5 16-18 Ni 3.5 2.5 max. 1.5 max. Mo 0.5-4 0.75-2.5 1.0-2.0 Cu 2.0 max. 1.5 max. 1.0 max. N 0.2-0.8 0.3-0.7 0.4-0.6 B 0.06 max. 0.005 max. 0.005 max. ______________________________________the balance being iron. The alloy is balanced to be essentially ferrite-free and is further balanced according to Equations 1 and 2 (Eqs.Type: GrantFiled: April 12, 1990Date of Patent: March 10, 1992Assignee: Carpenter Technology CorporationInventors: Bradford A. Dulmaine, Theodore Kosa, John H. Magee, Jr., Donald K. Schlosser
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Patent number: 5091024Abstract: A ferritic alloy, having an improved combination of magnetic properties and corrosion resistance, contains, in weight percent, about______________________________________ % ______________________________________ Carbon 0.03 max. Manganese 0.5 max. Silicon 0.5 max. Phosphorus 0.03 max. Sulfur 0-0.5 Chromium 10-13.0 Molybdenum 0-1.5 Nitrogen 0.05 max. Titanium 0.01 max. Aluminum 0.01 max. ______________________________________and the balance is essentially iron. The alloy, and articles made therefrom, provide higher saturation induction than known corrosion resistant, magnetic alloys.Type: GrantFiled: June 27, 1990Date of Patent: February 25, 1992Assignee: Carpenter Technology CorporationInventors: Terry A. DeBold, Theodore Kosa, Millard S. Masteller
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Patent number: 4994122Abstract: A ferritic alloy, having an improved combination of magnetic properties and corrosion resistance, contains, in weight percent, about______________________________________ % ______________________________________ Carbon 0.03 max. Manganese 0.5 max. Silicon 0.5 max. Sulfur 0-0.5 Chromium 2-13.0 Molybdenum 0-1.5 Nitrogen 0.05 max. ______________________________________and the balance is essentially iron. The alloy, and articles made therefrom, provide higher saturation induction than known corrosion resistant, magnetic alloys.Type: GrantFiled: July 13, 1989Date of Patent: February 19, 1991Assignee: Carpenter Technology CorporationInventors: Terry A. DeBold, Theodore Kosa, Millard S. Masteller