Patents by Inventor Annamaria Vilinska
Annamaria Vilinska 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: 20240033972Abstract: A method and apparatus to manufacture gypsum board that directs a first portion of aqueous gypsum slurry to a front cover sheet, directs a second portion of aqueous gypsum slurry to a back cover sheet, passes the back cover sheet over a roller spaced above the front cover sheet so that a majority of the second aqueous gypsum slurry falls off the back cover sheet onto the first portion of aqueous gypsum slurry on the front cover sheet. A gypsum board made by the method or apparatus.Type: ApplicationFiled: July 10, 2023Publication date: February 1, 2024Inventors: Sooraj Kumar AMBADI OMANAKUTTAN NAIR, Mark K. HEMPHILL, Yijun Sang, Annamaria Vilinska
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Publication number: 20230406781Abstract: A process is provided for creating a gypsum wallboard slurry with enhanced strength. The process includes providing a gypsum wallboard slurry mixer, providing suitable amounts of calcined gypsum and water in the mixer to create a slurry, agitating the slurry in the mixer, extracting a portion of the slurry in the mixer, reintroducing the extracted portion into the mixer for further mixing, and dispensing the mixed slurry from an outlet of the mixer.Type: ApplicationFiled: April 4, 2023Publication date: December 21, 2023Inventors: Annamaria VILINSKA, Mark HEMPHILL, Naser ALDABAIBEH, Mark ANTOSH
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Patent number: 11584690Abstract: Disclosed is a composite gypsum board comprising a board core and a concentrated layer, as well as related methods of preparing board and slurries. The board core and the concentrated layer both are formed from water and stucco. The concentrated layer is designed to have higher density and/or nail pull than the core. The concentrated layer is further formed from a polysaccharide that forms a complex with calcium ions, e.g., an alginate compound such as sodium alginate. In some embodiments, the concentrated layer is formed from an enhancing additive to enhance strength therein, while the core is formed without using enhancing additive or less enhancing additive than used in forming the board core.Type: GrantFiled: May 2, 2019Date of Patent: February 21, 2023Assignee: United States Gypsum CompanyInventors: Annamaria Vilinska, Alfred C. Li
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Publication number: 20230021340Abstract: Disclosed is a composite gypsum board comprising a set gypsum core disposed between face (e.g., Manila) and back (e.g., Newsline) cover sheets. The set gypsum core is formed from a core slurry comprising stucco, water, and optional additives, such as foaming agent, migrating starch, accelerator, retarder, dispersant, etc. A dense layer formed from a dense layer slurry comprising stucco, water, fiber (e.g., paper fiber), and optionally, strength-enhancing starch, is disposed between the core and the face paper. The dense layer slurry contains a greater concentration of fiber, and optionally, strength-enhancing starch, than the core slurry, but the concentration of one or more other additives (e.g., accelerator, retarder, dispersant, or combinations thereof) is lower or the same in the dense slurry as compared with the core slurry. Also disclosed is a method of making board using one board mixer. In embodiments, paper fiber is added to water to form a suspension.Type: ApplicationFiled: June 30, 2022Publication date: January 26, 2023Applicant: United States Gypsum CompanyInventors: Annamaria VILINSKA, Mark K. HEMPHILL, Yijun SANG, Nicholas S. JONES, Kevern O. FRASER, Jon CROSS, Te Hua LAU
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Publication number: 20230002278Abstract: A gypsum board is provided, including, a set gypsum core disposed between two cover sheets, the set gypsum core including a gypsum crystal matrix formed from at least water, stucco, and a foam, and the foam is formed from a blend of a first surfactant, a second surfactant and a third surfactant and water. Each surfactant is a distinct composition from the other surfactants.Type: ApplicationFiled: June 21, 2022Publication date: January 5, 2023Inventors: Annamaria VILINSKA, Alfred C. LI
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Patent number: 11267759Abstract: Disclosed is a method and system for blending a foam modifier with foaming agent on-line, e.g., as may be particularly useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl sulfate surfactant. The fatty alcohol can be a C6-C16 fatty alcohol in some embodiments. The use of such a foam modifier can be used, for example, to stabilize the foam, reduce waste of foaming agent, improve void size control in the final product, and improve the gypsum board manufacturing process.Type: GrantFiled: April 13, 2020Date of Patent: March 8, 2022Assignee: UNITED STATES GYPSUM COMPANYInventors: Annamaria Vilinska, Alfred C. Li, Weixin D. Song
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Publication number: 20210331978Abstract: A method for making a gypsum board including: combining a first plurality of particles including at least about 50 wt. % calcium sulfate dihydrate and about 0.05 wt. % to about 10 wt. % hydrophobic material and having a D50 particle size of about 200 ?m to about 800 ?m with a second plurality of particles including calcium sulfate hemihydrate to form a combined mixture of calcium sulfate; adding water to the combined mixture of calcium sulfate to make an aqueous gypsum slurry; depositing a core layer including the aqueous gypsum slurry over a forming surface; and allowing the core layer to set, thereby forming a set gypsum core.Type: ApplicationFiled: March 24, 2021Publication date: October 28, 2021Inventors: Rudy A. Schermann, Annamaria Vilinska, Alfred Li, Blair C. Walker, Te Hua Lau, Stephen P. Erickson, Jose Luis Carrazco, Angel Arturo Rueda
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Patent number: 11040513Abstract: Disclosed is a composite gypsum board comprising a board core and a concentrated layer of substantial thickness (e.g., at least about 0.02 inches). The concentrated layer includes a higher weight percentage of an enhancing additive than the board core. The board core has a thickness greater than the thickness of the concentrated layer and forms the bulk of the board volume. The concentrated layer has a higher density (e.g., at least about 1.1 times greater) than the density of the board core. Also disclosed is a method of preparing a composite gypsum board.Type: GrantFiled: June 17, 2016Date of Patent: June 22, 2021Assignee: UNITED STATES GYPSUM COMPANYInventors: Alfred C. Li, Weixin D. Song, Yijun Sang, Gregg G. Diefenbacher, Annamaria Vilinska, Brian J. Christ, Fredrick T. Jones, Bradley W. Todd
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Patent number: 10968138Abstract: A gypsum slurry includes water, a hydraulic component including calcium sulfate hemihydrate and a linear polycarboxylate dispersant. The linear polycarboxylate anionic dispersant includes a first monomeric repeating unit and a second monomeric repeating unit. The first repeating unit of the linear polycarboxylate dispersant is an olefinic unsaturated carboxylic acid repeating unit or salt thereof. The second repeating unit of the linear polycarboxylate dispersant is a vinyl sulfonate. The slurry can be made into a gypsum panel. Methods of making gypsum slurry and a gypsum panel are also disclosed.Type: GrantFiled: September 5, 2019Date of Patent: April 6, 2021Assignee: UNITED STATES GYPSUM COMPANYInventors: Annamaria Vilinska, Alfred C. Li, Mario Dupuis, Iordana Triantafillu, Francis Loiseau
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Publication number: 20200239366Abstract: Disclosed is a method and system for blending a foam modifier with foaming agent on-line, e.g., as may be particularly useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl sulfate surfactant. The fatty alcohol can be a C6-C16 fatty alcohol in some embodiments. The use of such a foam modifier can be used, for example, to stabilize the foam, reduce waste of foaming agent, improve void size control in the final product, and improve the gypsum board manufacturing process.Type: ApplicationFiled: April 13, 2020Publication date: July 30, 2020Applicant: United States Gypsum CompanyInventors: Annamaria Vilinska, Alfred C. LI, Weixin D. SONG
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Patent number: 10662112Abstract: Disclosed is a method and system for blending a foam modifier with foaming agent online, e.g., as may be particularly useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl sulfate surfactant. The fatty alcohol can be a C6-C16 fatty alcohol in some embodiments. The use of such a foam modifier can be used, for example, to stabilize the foam, reduce waste of foaming agent, improve void size control in the final product, and improve the gypsum board manufacturing process.Type: GrantFiled: February 13, 2017Date of Patent: May 26, 2020Assignee: United States Gypsum CompanyInventors: Annamaria Vilinska, Alfred C. Li, Weixin D. Song
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Publication number: 20190389768Abstract: A gypsum slurry includes water, a hydraulic component including calcium sulfate hemihydrate and a linear polycarboxylate dispersant. The linear polycarboxylate anionic dispersant includes a first monomeric repeating unit and a second monomeric repeating unit. The first repeating unit of the linear polycarboxylate dispersant is an olefinic unsaturated carboxylic acid repeating unit or salt thereof. The second repeating unit of the linear polycarboxylate dispersant is a vinyl sulfonate. The slurry can be made into a gypsum panel. Methods of making gypsum slurry and a gypsum panel are also disclosed.Type: ApplicationFiled: September 5, 2019Publication date: December 26, 2019Applicant: UNITED STATES GYPSUM COMPANYInventors: Annamaria Vilinska, Alfred C. Li, Mario Dupuis, Iordana Triantafillu, Francis Loiseau
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Publication number: 20190352233Abstract: Disclosed is a composite gypsum board comprising a board core and a concentrated layer, as well as related methods of preparing board and slurries. The board core and the concentrated layer both are formed from water and stucco. The concentrated layer is designed to have higher density and/or nail pull than the core. The concentrated layer is further formed from a polysaccharide that forms a complex with calcium ions, e.g., an alginate compound such as sodium alginate. In some embodiments, the concentrated layer is formed from an enhancing additive to enhance strength therein, while the core is formed without using enhancing additive or less enhancing additive than used in forming the board core.Type: ApplicationFiled: May 2, 2019Publication date: November 21, 2019Applicant: United States Gypsum CompanyInventors: Annamaria VILINSKA, Alfred C. Li
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Patent number: 10442732Abstract: A gypsum slurry includes water, a hydraulic component including calcium sulfate hemihydrate and a linear polycarboxylate dispersant. The linear polycarboxylate anionic dispersant includes a first monomeric repeating unit and a second monomeric repeating unit. The first repeating unit of the linear polycarboxylate dispersant is an olefinic unsaturated carboxylic acid repeating unit or salt thereof. The second repeating unit of the linear polycarboxylate dispersant is a vinyl sulfonate. The slurry can be made into a gypsum panel. Methods of making gypsum slurry and a gypsum panel are also disclosed.Type: GrantFiled: May 8, 2017Date of Patent: October 15, 2019Assignee: UNITED STATES GYPSUM COMPANYInventors: Annamaria Vilinska, Alfred C. Li, Mario Dupuis, Iordana Triantafillu, Francis Loiseau
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Patent number: 10421250Abstract: Disclosed is a composite gypsum board comprising a board core and a concentrated layer of substantial thickness (e.g., at least about 0.02 inches). The concentrated layer includes a higher weight percentage of an enhancing additive than the board core. The board core has a thickness greater than the thickness of the concentrated layer and forms the bulk of the board volume. The concentrated layer has a higher density (e.g., at least about 1.1 times greater) than the density of the board core. Also disclosed is a method of preparing a composite gypsum board.Type: GrantFiled: June 17, 2016Date of Patent: September 24, 2019Assignee: UNITED STATES GYPSUM COMPANYInventors: Alfred C. Li, Weixin D. Song, Yijun Sang, Gregg G. Diefenbacher, Annamaria Vilinska, Brian J. Christ, Fredrick T. Jones, Bradley W. Todd
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Patent number: 10421251Abstract: Disclosed is a composite gypsum board comprising a hoard core and a concentrated layer of substantial thickness (e.g., at least about 0.02 inches). The concentrated layer includes a higher weight percentage of an enhancing additive than the board core. The board core has a thickness greater than the thickness of the concentrated layer and forms the bulk of the board volume. The concentrated layer has a higher density (e.g., at least about 1.1 times greater) than the density of the board core. Also disclosed is a method of preparing a composite gypsum board.Type: GrantFiled: June 17, 2016Date of Patent: September 24, 2019Assignee: UNITED STATES GYPSUM COMPANYInventors: Alfred C. Li, Weixin D. Song, Yijun Sang, Gregg G. Diefenbacher, Annamaria Vilinska, Brian J. Christ, Fredrick T. Jones, Bradley W. Todd
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Patent number: 10407344Abstract: Disclosed is a foam modifier, e.g., useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl sulfate surfactant. The fatty alcohol can be a C6-C16 fatty alcohol in some embodiments. The use of such a foam modifier can be used, for example, to stabilize the foam, reduce waste of foaming agent, improve void size control in the final product, and improve the gypsum board manufacturing process.Type: GrantFiled: June 17, 2016Date of Patent: September 10, 2019Assignee: United States Gypsum CompanyInventors: Annamaria Vilinska, Weixin D. Song, Alfred C. Li
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Publication number: 20170334778Abstract: A gypsum slurry includes water, a hydraulic component including calcium sulfate hemihydrate and a linear polycarboxylate dispersant. The linear polycarboxylate anionic dispersant includes a first monomeric repeating unit and a second monomeric repeating unit. The first repeating unit of the linear polycarboxylate dispersant is an olefinic unsaturated carboxylic acid repeating unit or salt thereof. The second repeating unit of the linear polycarboxylate dispersant is a vinyl sulfonate. The slurry can be made into a gypsum panel. Methods of making gypsum slurry and a gypsum panel are also disclosed.Type: ApplicationFiled: May 8, 2017Publication date: November 23, 2017Inventors: Annamaria Vilinska, Alfred C. Li, Mario Dupuis, Iordana Triantafillu, Francis Loiseau
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Publication number: 20170152177Abstract: Disclosed is a method and system for blending a foam modifier with foaming agent online, e.g., as may be particularly useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl sulfate surfactant. The fatty alcohol can be a C6-C16 fatty alcohol in some embodiments. The use of such a foam modifier can be used, for example, to stabilize the foam, reduce waste of foaming agent, improve void size control in the final product, and improve the gypsum board manufacturing process.Type: ApplicationFiled: February 13, 2017Publication date: June 1, 2017Inventors: Annamaria Vilinska, Alfred C. LI, Weixin D. SONG
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Publication number: 20170096366Abstract: Disclosed is a foam modifier, e.g., useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl sulfate surfactant. The fatty alcohol can be a C6-C16 fatty alcohol in some embodiments. The use of such a foam modifier can be used, for example, to stabilize the foam, reduce waste of foaming agent, improve void size control in the final product, and improve the gypsum board manufacturing process.Type: ApplicationFiled: June 17, 2016Publication date: April 6, 2017Inventors: Annamaria Vilinska, Weixin D. SONG, Alfred C. LI