Patents by Inventor Dawn P. Elko
Dawn P. Elko 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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Patent number: 7033432Abstract: The present invention provides a plaster composition that includes calcined gypsum and a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight from about 17,000 to about 47,000. The present invention also provides a method of forming a plaster composition that includes belending calcined gypsum and a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight from about 17,000 to about 47,000 together to form a dry blend and contacting the dry blend with water to form a hardenable aqueous slurry.Type: GrantFiled: February 2, 2005Date of Patent: April 25, 2006Assignee: GEO Speciality Chemicals, Inc.Inventors: Arpad Savoly, Dawn P Elko, Bennie Veal
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Patent number: 6929875Abstract: The present invention provides a dispersant and foaming agent combination that is useful in the production of gypsum wallboard and other aqueous cementitious products, a method of forming a gypsum wallboard and a gypsum wallboard. The dispersant in the combination according to the invention is a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight of from about 17,000 to about 47,000. The alkali is preferably an alkali metal and/or an alkaline earth metal. The aldehyde is preferably formaldehyde. The foaming agent used in the combination according to the invention is a soap, preferably an alkali salt of an alkyl ether sulfate and/or an alkyl sulfate. The combination of a high molecular weight dispersant and a foaming agent produces a gypsum wallboard core effect that more efficiently entrains air (i.e., creates void space), thereby lowering overall board weight without detrimentally affecting strength.Type: GrantFiled: November 5, 2003Date of Patent: August 16, 2005Assignee: GEO Specialty Chemicals, Inc.Inventors: Arpad Savoly, Dawn P. Elko, Bennie Veal, James McCrary
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Patent number: 6863837Abstract: The present invention provides a sulfonated coal tar distillate salt polymer that is a condensation product of an aldehyde, preferably formaldehyde, and a sulfonated middle fraction obtained during coal tar distillation. The middle fraction includes from about 40% to about 95% by weight naphthalene and from about 5% to about 60% by weight of a plurality of compounds selected from the group consisting of quinoline, indene, biphenyl, indane, acenaphthene, anthracene, phenanthrene, methyl naphthalene, cresol, phenol, xylenol, and tetralin. The present invention also provides a method of forming a sulfonated coal tar distillate salt polymer.Type: GrantFiled: August 5, 2002Date of Patent: March 8, 2005Assignee: GEO Specialty Chemicals, Inc.Inventors: Arpad Savoly, Dawn P. Elko, Bennie Veal, Michelle L. McMahon, David B. Heller, Jr.
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Patent number: 6774146Abstract: The present invention provides a dispersant and foaming agent combination that is useful in the production of gypsum wallboard and other aqueous cementitious products. The dispersant in the combination according to the invention is a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight of from about 17,000 to about 47,000. The alkali is preferably an alkali metal and/or an alkaline earth metal. The aldehyde is preferably formaldehyde. The foaming agent used in the combination according to the invention is a soap, preferably an alkali salt of an alkyl ether sulfate and/or an alkyl sulfate. The combination of a high molecular weight dispersant and a foaming agent produces a gypsum wallboard core effect that more efficiently entrains air (i.e., creates void space), thereby lowering overall board weight without detrimentally affecting strength.Type: GrantFiled: August 7, 2002Date of Patent: August 10, 2004Assignee: GEO Specialty Chemicals, Inc.Inventors: Arpad Savoly, Dawn P. Elko, Bennie Veal, James McCrary
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Publication number: 20040092676Abstract: The present invention provides a dispersant and foaming agent combination that is useful in the production of gypsum wallboard and other aqueous cementitious products, a method of forming a gypsum wallboard and a gypsum wallboard. The dispersant in the combination according to the invention is a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight of from about 17,000 to about 47,000. The alkali is preferably an alkali metal and/or an alkaline earth metal. The aldehyde is preferably formaldehyde. The foaming agent used in the combination according to the invention is a soap, preferably an alkali salt of an alkyl ether sulfate and/or an alkyl sulfate. The combination of a high molecular weight dispersant and a foaming agent produces a gypsum wallboard core effect that more efficiently entrains air (i.e., creates void space), thereby lowering overall board weight without detrimentally affecting strength.Type: ApplicationFiled: November 5, 2003Publication date: May 13, 2004Applicant: GEO Specialty Chemicals, Inc.Inventors: Arpad Savoly, Dawn P. Elko, Bennie Veal, James McCrary
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Publication number: 20040091751Abstract: The present invention provides a dispersant and foaming agent combination that is useful in the production of gypsum wallboard and other aqueous cementitious products, a method of forming a gypsum wallboard and a gypsum wallboard. The dispersant in the combination according to the invention is a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight of from about 17,000 to about 47,000. The alkali is preferably an alkali metal and/or an alkaline earth metal. The aldehyde is preferably formaldehyde. The foaming agent used in the combination according to the invention is a soap, preferably an alkali salt of an alkyl ether sulfate and/or an alkyl sulfate. The combination of a high molecular weight dispersant and a foaming agent produces a gypsum wallboard core effect that more efficiently entrains air (i.e., creates void space), thereby lowering overall board weight without detrimentally affecting strength.Type: ApplicationFiled: November 5, 2003Publication date: May 13, 2004Applicant: GEO Specialty Chemicals, Inc.Inventors: Arpad Savoly, Dawn P. Elko, Bennie Veal, James McCrary
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Publication number: 20040028956Abstract: The present invention provides a dispersant and foaming agent combination that is useful in the production of gypsum wallboard and other aqueous cementitious products, a method of forming a gypsum wallboard and a gypsum wallboard. The dispersant in the combination according to the invention is a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight of from about 17,000 to about 47,000. The alkali is preferably an alkali metal and/or an alkaline earth metal. The aldehyde is preferably formaldehyde. The foaming agent used in the combination according to the invention is a soap, preferably an alkali salt of an alkyl ether sulfate and/or an alkyl sulfate. The combination of a high molecular weight dispersant and a foaming agent produces a gypsum wallboard core effect that more efficiently entrains air (i.e., creates void space), thereby lowering overall board weight without detrimentally affecting strength.Type: ApplicationFiled: August 7, 2002Publication date: February 12, 2004Inventors: Arpad Savoly, Dawn P. Elko, Bennie Veal, James McCrary
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Publication number: 20040020108Abstract: The present invention provides a sulfonated coal tar distillate salt polymer that is a condensation product of an aldehyde, preferably formaldehyde, and a sulfonated middle fraction obtained during coal tar distillation. The middle fraction includes from about 40% to about 95% by weight naphthalene and from about 5% to about 60% by weight of a plurality of compounds selected from the group consisting of quinoline, indene, biphenyl, indane, acenaphthene, anthracene, phenanthrene, methyl naphthalene, cresol, phenol, xylenol, and tetralin. The present invention also provides a method of forming a sulfonated coal tar distillate salt polymer.Type: ApplicationFiled: August 5, 2002Publication date: February 5, 2004Inventors: Arpad Savoly, Dawn P. Elko, Bennie Veal, Michelle L. McMahon, David B. Heller
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Patent number: 5714001Abstract: Surfactants containing a mixture of alkyl sulfate and alkyl ether sulfate in specific ratios are provided. Preferred compositions are blends of alkyl sulfate with narrow range alkoxylated alcohols are sulfonated. These compositions are used as improved foaming agent compositions and exhibit desirable foaming characteristics for use in the manufacture of gypsum board and concrete and in oil field applications.Type: GrantFiled: November 13, 1995Date of Patent: February 3, 1998Assignee: Geo Specialty Chemicals, Inc.Inventors: Arpad Savoly, Dawn P. Elko
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Patent number: 5158612Abstract: Narrow range alkoxylated alcohols are sulfonated and used as improved foaming agent compositions. These compositions exhibit desirable foaming characteristics for use in the manufacture of gypsum board and concrete and in oil field applications.Type: GrantFiled: October 25, 1991Date of Patent: October 27, 1992Assignee: Henkel CorporationInventors: Arpad Savoly, Dawn P. Elko