Patents by Inventor Naveen PUNATI
Naveen PUNATI 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: 20240101479Abstract: A method of making a setting type compound by injecting an activator compound into a plaster compound wherein the activator compound tube is coaxial and within the plaster compound tube, each at the same flowrate, the same pressure and the same viscosity. The cross sectional transverse areas of an annulus containing the plaster compound and the hole in the annulus containing the activator compound are the same.Type: ApplicationFiled: April 6, 2023Publication date: March 28, 2024Applicant: UNITED STATES GYPSUM COMPANYInventors: Rafael Bury, Joseph W. Schlude, David D. Pelot, Naveen Punati, Tyler Kincaid, Juan Ignacio Huitzil
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Publication number: 20240076239Abstract: Stucco-cement compositions with a shortened drying time, lighter weight, high strength and reduced expansion, the compositions comprising expanded perlite and preferably also calcium aluminate cement and/or calcium sulfoaluminate cement, and methods for making and using these compositions, including pourable and/or pumpable floor underlayment slurries and methods for forming high strength underlayment on different substrates.Type: ApplicationFiled: March 2, 2023Publication date: March 7, 2024Inventors: Sriram K. Valluri, David D. Pelot, Naveen Punati, Derik Harlow, Scott Cimaglio, Karl G. Niessner
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Patent number: 11834375Abstract: Disclosed are a composite gypsum board and a method of preparing composite gypsum board. The board contains a set gypsum core sandwiched between two cover sheets. The core is formed from a slurry containing stucco, water, and optional ingredients such as foaming agent, accelerator, retarder, polyphosphate, starch, and dispersant, and core intumescent material. The board also contains at least one skim coat and/or hard edges. A face skim coat layer can be included on one side of the core, facing a face cover sheet. A back skim coat layer can be included on the other side of the core, facing a back cover sheet. Hard edges are known in the art and can be formed, e.g., continuously from a stucco slurry for forming the face and/or back skim coats. Preferably, the back skim coat layer and/or the hard edges are formed from a slurry containing stucco, water, skim coat or edge intumescent material (which have the same desired characteristics), and other optional additives as desired.Type: GrantFiled: January 22, 2021Date of Patent: December 5, 2023Assignee: United States Gypsum CompanyInventors: Qinghua Li, Mark K. Hemphill, Naveen Punati
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Patent number: 11760692Abstract: A snap-setting joint compound with reduced calcium sulfate hemihydrate and improved sandability, as well as methods for building wall assemblies and repairing walls with the joint compound.Type: GrantFiled: January 12, 2021Date of Patent: September 19, 2023Assignee: UNITED STATES GYPSUM COMPANYInventors: Christian Huch, Alexander J. Donovan, Jeffrey F. Grussing, Naveen Punati, Pamela L. Hargrove, Joseph W. Schlude
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Publication number: 20220267214Abstract: A high solids, sprayable, fast drying, ready-mixed setting-type joint compound comprising a blend of a joint compound mixture comprising: joint compound mixture ingredients comprising: calcium sulfate hemihydrate (e.g. US Gypsum's HYDROCAL C-Base), a chelating agent, and water; and an activator mixture, wherein the activator mixture comprises: activator mixture ingredients comprising: inert filler, set accelerator, and water, wherein a weight ratio of joint compound mixture:activator mixture is 1:1 to 100:1, wherein the activator mixture viscosity is the same as the joint compound mixture viscosity plus or minus 50 percent, and wherein the joint compound has about 55 to about 80 wt. % solids and a viscosity of 2,500-28,000 cps.Type: ApplicationFiled: November 16, 2021Publication date: August 25, 2022Applicant: KNAUF GIPS KG.Inventors: Tyler Kincaid, Rafael Bury, Joseph W. Schlude, Naveen Punati
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Publication number: 20210238096Abstract: Disclosed are a composite gypsum board and a method of preparing composite gypsum board. The board contains a set gypsum core sandwiched between two cover sheets. The core is formed from a slurry containing stucco, water, and optional ingredients such as foaming agent, accelerator, retarder, polyphosphate, starch, and dispersant, and core intumescent material. The board also contains at least one skim coat and/or hard edges. A face skim coat layer can be included on one side of the core, facing a face cover sheet. A back skim coat layer can be included on the other side of the core, facing a back cover sheet. Hard edges are known in the art and can be formed, e.g., continuously from a stucco slurry for forming the face and/or back skim coats. Preferably, the back skim coat layer and/or the hard edges are formed from a slurry containing stucco, water, skim coat or edge intumescent material (which have the same desired characteristics), and other optional additives as desired.Type: ApplicationFiled: January 22, 2021Publication date: August 5, 2021Applicant: United States Gypsum CompanyInventors: Qinghua LI, Mark K. HEMPHILL, Naveen PUNATI
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Publication number: 20210230067Abstract: A snap-setting joint compound with reduced calcium sulfate hemihydrate and improved sandability, as well as methods for building wall assemblies and repairing walls with the joint compound.Type: ApplicationFiled: January 12, 2021Publication date: July 29, 2021Applicant: UNITED STATES GYPSUM COMPANYInventors: Christian HUCH, Alexander J. DONOVAN, Jeffrey F. GRUSSING, Naveen PUNATI, Pamela L. HARGROVE, Joseph W. SCHLUDE
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Publication number: 20210017082Abstract: A joint compound including calcium sulfate hemihydrate and/or at least one filler, wherein a total amount of the at least one filler and/or calcium sulfate hemihydrate is at least about 50 wt % of the joint compound on a dry (water-free) basis, preferably the filler comprises calcium carbonate, calcium sulfate dihydrate, or calcium sulfate anhydrite, or a mixture thereof; binder at up to about 15 wt % of the joint compound on a dry basis; polymer thickener at up to about 3 wt % of the joint compound on a dry basis; plasticizer dedusting agent at about 0.01 to about 3 wt % of the joint compound on a dry (water free) basis; and an additive up to about 10 wt % of the joint compound on a dry basis.Type: ApplicationFiled: March 9, 2020Publication date: January 21, 2021Applicant: UNITED STATES GYPSUM COMPANYInventors: Alexander J. Donovan, Tyler Kincaid, David Pelot, Richard B. Stevens, Robert H. Negri, Naveen Punati
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Patent number: 10689846Abstract: A panel for a shaftwall system includes a panel body with a core and at least one outer facing layer and an opposite backing surface. A score line is formed in the facing layer, defining two folded panel portions. The panel is folded along the score line to form a folded edge, and the folded panel portions are arranged so that the backing surfaces of the panel portions contact each other. A companion shaftwall building structure system is provided, including a plurality of the panels defining an enclosure, each panel being a ½-inch thick wallboard panel having a “V”-shaped score line defining a pair of panel portions, the score line forms a tapered edge of the folded panel. A plurality of brackets is provided, each bracket defining a panel track dimensioned for slidingly accommodating the folded panel and retaining the panel in place without the use of fasteners.Type: GrantFiled: July 18, 2017Date of Patent: June 23, 2020Assignee: UNITED STATES GYPSUM COMPANYInventors: James M. Ullett, Naveen Punati
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Patent number: 10604929Abstract: Disclosed are a gypsum board, and related slurries and methods. The gypsum board comprises a gypsum layer disposed between two cover sheets. The gypsum layer comprises a crystalline matrix of set gypsum and expandable graphite. The expandable graphite exhibits volume expansion at high temperatures. Optionally, unexpanded vermiculite can also be included in the gypsum layer to provide an expansion component at even higher temperatures. Because of synergy between the expandable graphite and unexpanded vermiculite in accordance with some embodiments, less vermiculite can be included in the board than in conventional board that contained vermiculite. The board desirably can pass one or more fire-related tests, and is a fire-rated board in some embodiments.Type: GrantFiled: November 1, 2016Date of Patent: March 31, 2020Assignee: United States Gypsum CompanyInventors: Qinghua Li, Naveen Punati, Mark Antosh, Weixin D. Song
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Patent number: 10076853Abstract: A slurry distributor includes a feed conduit and a distribution conduit in fluid communication therewith. The feed conduit includes an entry segment with a feed inlet and a feed entry outlet in fluid communication therewith and extending along a first feed flow axis. The feed conduit includes a shaped duct having a bulb portion in fluid communication with the feed entry outlet. The feed conduit includes a transition segment in fluid communication with the bulb portion and extending along a second feed flow axis in non-parallel relationship with the first feed flow axis. The bulb portion has an area of expansion with a cross-sectional flow area that is greater than a cross-sectional flow area of an adjacent area upstream from the area of expansion. The shaped duct has a convex interior surface in confronting relationship with the feed entry outlet of the entry segment.Type: GrantFiled: March 15, 2013Date of Patent: September 18, 2018Assignee: United States Gypsum CompanyInventors: James Wittbold, Chris C. Lee, Alfred C. Li, Naveen Punati, William J. Rago, Luis Carrazco
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Patent number: 10066392Abstract: A combined wooden frame support and ceiling system is provided, each support including upper and lower wooden chords and a wooden structure connecting the lower chord to the upper chord for weight bearing purposes. A gypsum wallboard batten strip is attached to the lower chord, and defining a ledge extending from each side of the lower chord. A single thickness of gypsum wallboard panels is used to create a ceiling attached to the support, each panel used to create the ceiling is made from a slurry composition including less than 5% by weight of Grade 4 vermiculite. Upon the support being assembled in the ceiling system, with a plurality of the supports, and having lengths of insulation supported by the ledges of the adjacent supports, the ceiling system resists charring by fire for at least one hour.Type: GrantFiled: March 22, 2017Date of Patent: September 4, 2018Assignee: UNITED STATES GYPSUM COMPANYInventors: Gary Franklin Miller, Joseph Edward Swinea, Naveen Punati
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Publication number: 20180119417Abstract: Disclosed are a gypsum board, and related slurries and methods. The gypsum board comprises a gypsum layer disposed between two cover sheets. The gypsum layer comprises a crystalline matrix of set gypsum and expandable graphite. The expandable graphite exhibits volume expansion at high temperatures. Optionally, unexpanded vermiculite can also be included in the gypsum layer to provide an expansion component at even higher temperatures. Because of synergy between the expandable graphite and unexpanded vermiculite in accordance with some embodiments, less vermiculite can be included in the board than in conventional board that contained vermiculite. The board desirably can pass one or more fire-related tests, and is a fire-rated board in some embodiments.Type: ApplicationFiled: November 1, 2016Publication date: May 3, 2018Inventors: Qinghua Li, Naveen Punati, Mark Antosh, Weixin D. Song
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Publication number: 20180087270Abstract: A combined wooden frame support and ceiling system is provided, each support including upper and lower wooden chords and a wooden structure connecting the lower chord to the upper chord for weight bearing purposes. A gypsum wallboard batten strip is attached to the lower chord, and defining a ledge extending from each side of the lower chord. A single thickness of gypsum wallboard panels is used to create a ceiling attached to the support, each panel used to create the ceiling is made from a slurry composition including less than 5% by weight of Grade 4 vermiculite. Upon the support being assembled in the ceiling system, with a plurality of the supports, and having lengths of insulation supported by the ledges of the adjacent supports, the ceiling system resists charring by fire for at least one hour.Type: ApplicationFiled: March 22, 2017Publication date: March 29, 2018Inventors: Gary Franklin MILLER, Joseph Edward SWINEA, Naveen PUNATI
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Publication number: 20180073246Abstract: A panel for a shaftwall system includes a panel body with a core and at least one outer facing layer and an opposite backing surface. A score line is formed in the facing layer, defining two folded panel portions. The panel is folded along the score line to form a folded edge, and the folded panel portions are arranged so that the backing surfaces of the panel portions contact each other. A companion shaftwall building structure system is provided, including a plurality of the panels defining an enclosure, each panel being a ½-inch thick wallboard panel having a “V”-shaped score line defining a pair of panel portions, the score line forms a tapered edge of the folded panel. A plurality of brackets is provided, each bracket defining a panel track dimensioned for slidingly accommodating the folded panel and retaining the panel in place without the use of fasteners.Type: ApplicationFiled: July 18, 2017Publication date: March 15, 2018Inventors: James M. ULLETT, Naveen PUNATI
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Publication number: 20130308411Abstract: A slurry distributor includes a feed conduit and a distribution conduit in fluid communication therewith. The feed conduit includes an entry segment with a feed inlet and a feed entry outlet in fluid communication therewith and extending along a first feed flow axis. The feed conduit includes a shaped duct having a bulb portion in fluid communication with the feed entry outlet. The feed conduit includes a transition segment in fluid communication with the bulb portion and extending along a second feed flow axis in non-parallel relationship with the first feed flow axis. The bulb portion has an area of expansion with a cross-sectional flow area that is greater than a cross-sectional flow area of an adjacent area upstream from the area of expansion. The shaped duct has a convex interior surface in confronting relationship with the feed entry outlet of the entry segment.Type: ApplicationFiled: March 15, 2013Publication date: November 21, 2013Applicant: UNITED STATES GYPSUM COMPANYInventors: James WITTBOLD, Chris C. LEE, Alfred C. LI, Naveen PUNATI, Bill RAGO, Luis CARRAZCO