Patents by Inventor Hubert C. Francis

Hubert C. Francis 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).

  • Lightweight gypsum wallboard
    Patent number: 10259196
    Abstract: A lightweight gypsum wallboard having a foamed gypsum core reinforced with pre-gelatinized, e.g., pre-gelled, starch and prepared by mixing an aqueous foam into a gypsum slurry comprising a source of calcined gypsum (commonly known as plaster of Paris), pre-gelled starch and a lignosulfonate dispersant; allowing the so-formed gypsum slurry to set, and then drying the set gypsum core.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: April 16, 2019
    Assignee: Georgia-Pacific Gypsum LLC
    Inventor: Hubert C. Francis
  • Ultra-Lightweight Gypsum Wallboard
    Publication number: 20150376063
    Abstract: A gypsum wallboard and a method of making the wallboard using a modified beta-gypsum hemihydrate obtained by calcining gypsum in the presence of a calcination modifier, under conditions for forming a beta-gypsum hemihydrate, wherein the wallboard is prepared using a stucco slurry formed by mixing the modified beta-gypsum hemihydrate with water, pre-gelatinized starch and a stucco dispersant.
    Type: Application
    Filed: June 27, 2014
    Publication date: December 31, 2015
    Inventor: Hubert C. Francis
  • LIGHTWEIGHT GYPSUM WALLBOARD
    Publication number: 20140315008
    Abstract: A lightweight gypsum wallboard having a foamed gypsum core reinforced with pre-gelatinized, e.g., pre-gelled, starch and prepared by mixing an aqueous foam into a gypsum slurry comprising a source of calcined gypsum (commonly known as plaster of Paris), pre-gelled starch and a lignosulfonate dispersant; allowing the so-formed gypsum slurry to set, and then drying the set gypsum core.
    Type: Application
    Filed: March 5, 2012
    Publication date: October 23, 2014
    Applicant: Georgia-Pacific Gypsum LLC
    Inventor: Hubert C. Francis
  • GYPSUM BOARDS MADE WITH HIGH PERFORMANCE BIO-BASED FACERS AND METHOD OF MAKING THE SAME
    Publication number: 20140302280
    Abstract: A gypsum panel that incorporates a plant fiber other than paper is disclosed. The plant fiber material may be in the form of a facing material adhered to at least one side of the gypsum panel or in the form of loose fibers integrated with the gypsum panel as a matrix or both. Further, the plant fiber may be combined with conventional gypsum panel additives, is fully recyclable and environmentally sustainable. The present invention further relates to a method of making such a gypsum panel.
    Type: Application
    Filed: April 25, 2012
    Publication date: October 9, 2014
    Inventors: Keshav S. Gautam, Samuel C. Baer, Hubert C. Francis, Micheal S. Lerch
  • Non-cement fire door core
    Patent number: 8673201
    Abstract: The present invention describes a fire resistant building material composition, useful for example as a fire door core and to a method of making this composition. The building material of the present invention is prepared from an aqueous mixture of predominately expanded perlite, a small amount of a binder component consisting essentially of calcined gypsum and an organic binder, and optionally a fibrous reinforcement.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: March 18, 2014
    Assignee: Georgia-Pacific Gypsum LLC
    Inventor: Hubert C. Francis
  • Non-Cement Fire Door Core
    Publication number: 20120248655
    Abstract: The present invention describes a fire resistant building material composition, useful for example as a fire door core and to a method of making this composition. The building material of the present invention is prepared from an aqueous mixture of predominately expanded perlite, a small amount of a binder component consisting essentially of calcined gypsum and an organic binder, and optionally a fibrous reinforcement.
    Type: Application
    Filed: June 11, 2012
    Publication date: October 4, 2012
    Applicant: Georgia-Pacific Gypsum LLC
    Inventor: Hubert C. Francis
  • Non-cement fire door core
    Patent number: 8221542
    Abstract: The present invention describes a fire resistant building material composition, useful for example as a fire door core and to a method of making this composition. The building material of the present invention is prepared from an aqueous mixture of predominately expanded perlite, a small amount of a binder component consisting essentially of calcined gypsum and an organic binder, and optionally a fibrous reinforcement.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: July 17, 2012
    Assignee: Georgia-Pacific Gypsum LLC
    Inventor: Hubert C. Francis
  • Cement-based fire door core
    Patent number: 8088217
    Abstract: The present invention describes an improved building material composition, useful for example as a fire door core. The building material of the present invention is prepared by compressing an aqueous mixture of expanded perlite and a fast setting, cementitious composition consisting essentially of a hydraulic cement, preferably Portland cement, and a pozzolan additive selected from the group consisting of metakaolin, VCAS and mixtures thereof, and preferably also includes an organic binder and a fibrous reinforcement.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: January 3, 2012
    Assignee: Georgia-Pacific Gypsum LLC
    Inventor: Hubert C. Francis
  • Light weight metal fire door core
    Patent number: 7927420
    Abstract: The present invention describes a fire resistant building material composition, useful for example as a fire door core and to a method of making this composition where the building material of the present invention is prepared from an aqueous slurry of calcined gypsum, paper fibers, a water insoluble organic binder, fiber reinforcement and a set retarder.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: April 19, 2011
    Assignee: Georgia-Pacific Gypsum LLC
    Inventor: Hubert C. Francis
  • LOW VOC JOINT COMPOSITION
    Publication number: 20100083879
    Abstract: A drying type, low VOC filler or joint composition that when mixed with water to produce a wet, paste-like mixture, can be spread easily to fill wallboard joints and other wallboard surface defects and imperfections; dries to a solid mass and can be sanded to a smooth finish.
    Type: Application
    Filed: October 8, 2008
    Publication date: April 8, 2010
    Applicant: GEORGIA-PACIFIC GYPSUM LLC
    Inventor: Hubert C. Francis
  • COMPOSITIONS FOR THE MANUFACTURE OF GYPSUM BOARDS, METHODS OF MANUFACTURE THEREOF, AND GYPSUM BOARDS FORMED THEREFROM
    Publication number: 20100075167
    Abstract: A composition for the manufacture of a gypsum board comprising hydrated pregelatinized starch and stucco with 0.4 to 3 wt. % of starch based on the stucco weight is disclosed. The composition provides enhanced strength in the absence of other strengthening agents.
    Type: Application
    Filed: September 24, 2008
    Publication date: March 25, 2010
    Applicant: Georgia-Pacific Gypsum LLC
    Inventors: Stuart Brandon Gilley, Hubert C. Francis, Carla Greaves Jones, Fabio E. Esguerra
  • Gypsum-based floor underlayment
    Patent number: 7651564
    Abstract: A flooring composition for mixing with water to produce a self-leveling slurry that quickly hydrates to form a high strength floor underlayment comprising a dry mixture of (1) beta gypsum produced by a continuous method; (2) Class C fly ash; (3) a conventional water reducing aid such as sulfonated melamines, sulfonated naphthalenes and their related formaldehyde condensates, and (4) a conventional set retarder.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: January 26, 2010
    Assignee: Georgia-Pacific Gypsum LLC
    Inventor: Hubert C. Francis
  • FLY ASH-BASED FLOOR PATCHING COMPOSITION
    Publication number: 20090306251
    Abstract: A floor patching composition for mixing with water to produce a self-leveling slurry that quickly hydrates to form an acceptable patch comprising a dry mixture of (1) Class C fly ash, (2) a calcium aluminate cement, (3) an organic binder along with (4) a cellulose ether, in part to facilitate mixing of the dry ingredients and preferably (5) an antimicrobial preservative and (6) metakaolin clay.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 10, 2009
    Applicant: GEORGIA-PACIFIC GYPSUM LLC
    Inventor: Hubert C. Francis
  • GYPSUM-BASED FLOOR UNDERLAYMENT
    Publication number: 20090255443
    Abstract: A flooring composition for mixing with water to produce a self-leveling slurry that quickly hydrates to form a high strength floor underlayment comprising a dry mixture of (1) beta gypsum produced by a continuous method; (2) Class C fly ash; (3) a conventional water reducing aid such as sulfonated melamines, sulfonated naphthalenes and their related formaldehyde condensates, and (4) a conventional set retarder.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 15, 2009
    Applicant: GEORGIA-PACIFIC GYPSUM LLC
    Inventor: Hubert C. Francis
  • WALLBOARD JOINT SYSTEM
    Publication number: 20090178357
    Abstract: The present invention relates to a drywall tape or joint tape comprising a non-woven web of fibers having a coating of a filled, film-forming polymer on one side and being non-coated on an opposite side for covering seams or for repairs generally in connection with fiber mat-faced gypsum wallboard, and more particularly pertains to a method for finishing joint seams and making other repairs in connection with a coated fiber mat-faced gypsum wallboard.
    Type: Application
    Filed: January 11, 2008
    Publication date: July 16, 2009
    Applicant: GEORGIA-PACIFIC GYPSUM LLC
    Inventor: Hubert C. Francis
  • LIGHT WEIGHT METAL FIRE DOOR CORE
    Publication number: 20090152519
    Abstract: The present invention describes a fire resistant building material composition, useful for example as a fire door core and to a method of making this composition where the building material of the present invention is prepared from an aqueous slurry of calcined gypsum, paper fibers, a water insoluble organic binder, fiber reinforcement and a set retarder.
    Type: Application
    Filed: December 13, 2007
    Publication date: June 18, 2009
    Applicant: Georgia-Pacific Gypsum LLC
    Inventor: Hubert C. Francis
  • CEMENT-BASED FIRE DOOR CORE
    Publication number: 20090151603
    Abstract: The present invention describes an improved building material composition, useful for example as a fire door core. The building material of the present invention is prepared by compressing an aqueous mixture of expanded perlite and a fast setting, cementitious composition consisting essentially of a hydraulic cement, preferably Portland cement, and a pozzolan additive selected from the group consisting of metakaolin, VCAS and mixtures thereof, and preferably also includes an organic binder and a fibrous reinforcement.
    Type: Application
    Filed: December 13, 2007
    Publication date: June 18, 2009
    Applicant: Georgia-Pacific Gypsum LLC
    Inventor: Hubert C. Francis
  • NON-CEMENT FIRE DOOR CORE
    Publication number: 20090151602
    Abstract: The present invention describes a fire resistant building material composition, useful for example as a fire door core and to a method of making this composition. The building material of the present invention is prepared from an aqueous mixture of predominately expanded perlite, a small amount of a binder component consisting essentially of calcined gypsum and an organic binder, and optionally a fibrous reinforcement.
    Type: Application
    Filed: December 13, 2007
    Publication date: June 18, 2009
    Applicant: Georgia-Pacific Gypsum LLC
    Inventor: Hubert C. Francis
  • Fire door core
    Patent number: 6846358
    Abstract: The present invention describes an improved building material composition, useful for example as a fire door core and to improved methods of making this composition. The building material of the present invention is prepared from an aqueous mixture of expanded perlite and a fast setting, cementitious composition consisting essentially of a hydraulic cement having (1) a Portland cement and (2) a calcium aluminate cement, which composition can be molded and shaped into a fire door core.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: January 25, 2005
    Assignee: Georgia-Pacific Gypsum, Inc.
    Inventor: Hubert C. Francis
  • Fire door core
    Publication number: 20040211338
    Abstract: The present invention describes an improved building material composition, useful for example as a fire door core and to improved methods of making this composition. The building material of the present invention is prepared from an aqueous mixture of expanded perlite and a fast setting, cementitious composition consisting essentially of a hydraulic cement having (1) a Portland cement and (2) a calcium aluminate cement, which composition can be molded and shaped into a fire door core.
    Type: Application
    Filed: April 25, 2003
    Publication date: October 28, 2004
    Applicant: Georgia-Pacific Gypsum, Inc.
    Inventor: Hubert C. Francis