Patents by Inventor John Claude Husband
John Claude Husband 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: 20160230341Abstract: Compositions such as filled and coated papers may include microfibrillated cellulose and inorganic particulate material.Type: ApplicationFiled: April 19, 2016Publication date: August 11, 2016Inventors: John Claude HUSBAND, Per Svending, David Robert Skuse
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Publication number: 20160053437Abstract: A method for preparing an aqueous suspension may include providing a fibrous substrate comprising cellulose having a Canadian Standard freeness equal to or less than 700 cm3, and microfibrillating the fibrous substrate in an aqueous environment by grinding in the presence of a grinding medium which is to be removed after completion of grinding. The grinding may be carried out in the absence of grindable inorganic particulate material, wherein the grinding medium is present in an amount of at least about 10% by volume of the aqueous environment, and wherein the microfibrillated cellulose has a fibre steepness of from about 20 to about 50.Type: ApplicationFiled: September 2, 2015Publication date: February 25, 2016Applicant: IMERYS MINERALS, LIMITEDInventors: JOHN CLAUDE HUSBAND, PER SVENDING, DAVID ROBERT SKUSE, TAFADZWA MOTSI, MIKKO LIKITALO, ALAN COLES
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Publication number: 20160032531Abstract: A paper product may include high energy thermomechanical pulp (TMP), low energy TMP, and microfibrillated cellulose. The paper product may also include inorganic particulate material. A papermaking composition suitable for making the paper product, a process for preparing the paper product, and use of microfibrillated cellulose may include high energy TMP, low energy TMP, and microfibrillated cellulose, and optionally inorganic particulate material. The microfibrillated cellulose may have a fibre steepness of from about 20 to about 50 in the paper product.Type: ApplicationFiled: March 12, 2014Publication date: February 4, 2016Inventors: JOHN CLAUDE HUSBAND, PER SVENDING
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Patent number: 9127405Abstract: A method for preparing an aqueous suspension comprising microfibrillated cellulose and inorganic particulate material, the method comprising a step of microfibrillating a fibrous substrate comprising cellulose in an aqueous environment in the presence of an inorganic particulate material.Type: GrantFiled: May 17, 2010Date of Patent: September 8, 2015Assignee: Imerys Minerals, LimitedInventors: John Claude Husband, Per Svending, David Robert Skuse, Tafadzwa Motsi, Mikko Likitalo, Alan Coles
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Publication number: 20130280545Abstract: Compositions such as filled and coated papers may include microfibrillated cellulose and inorganic particulate material.Type: ApplicationFiled: November 9, 2011Publication date: October 24, 2013Applicant: IMERYS MINERALS LIMITEDInventors: John Claude Husband, Per Svending, David Robert Skuse
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Patent number: 8231764Abstract: A method for preparing an aqueous suspension comprising microfibrillated cellulose and inorganic particulate material, the method comprising a step of microfibrillating a fibrous substrate comprising cellulose in an aqueous environment in the presence of an inorganic particulate material.Type: GrantFiled: September 26, 2011Date of Patent: July 31, 2012Assignee: Imerys Minerals, LimitedInventors: John Claude Husband, Per Svending, David Robert Skuse, Tafadzwa Motsi, Mikko Likitalo, Alan Coles
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Publication number: 20120012031Abstract: A method for preparing an aqueous suspension comprising microfibrillated cellulose and inorganic particulate material, the method comprising a step of microfibrillating a fibrous substrate comprising cellulose in an aqueous environment in the presence of an inorganic particulate material.Type: ApplicationFiled: September 26, 2011Publication date: January 19, 2012Inventors: JOHN CLAUDE HUSBAND, Per Svending, David Robert Skuse, Tafadzwa Motsi, Mikko Likitalo, Alan Coles
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Publication number: 20110259537Abstract: A method for preparing an aqueous suspension comprising microfibrillated cellulose and inorganic particulate material, the method comprising a step of microfibrillating a fibrous substrate comprising cellulose in an aqueous environment in the presence of an inorganic particulate material.Type: ApplicationFiled: May 17, 2010Publication date: October 27, 2011Applicant: IMERYS MINERALS LIMITEDInventors: John Claude Husband, Per Svending, David Robert Skuse, Tafadzwa Motsi, Mikko Likitalo, Alan Coles
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Patent number: 7938346Abstract: A method of preparing a steep particle size inorganic particulate material includes grinding an aqueous suspension of an inorganic particulate material having a solids content of less than 35% and including a sub-effective amount of a dispersant for the inorganic particulate material. The method may further include dewatering the aqueous suspension to a solids content of at least 50% and dispersing the dewatered aqueous suspension by adding an additional amount of dispersant, and wherein, after grinding, the inorganic particulate material has a steepness factor above 35.Type: GrantFiled: March 22, 2010Date of Patent: May 10, 2011Assignee: Imerys Minerals LimitedInventors: John Claude Husband, Nigel V. Jarvis, Charles Desmond Payton, David Robert Skuse
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Publication number: 20100219269Abstract: A method of preparing a steep particle size inorganic particulate material includes grinding an aqueous suspension of an inorganic particulate material having a solids content of less than 35% and including a sub-effective amount of a dispersant for the inorganic particulate material. The method may further include dewatering the aqueous suspension to a solids content of at least 50% and dispersing the dewatered aqueous suspension by adding an additional amount of dispersant, and wherein, after grinding, the inorganic particulate material has a steepness factor above 35.Type: ApplicationFiled: March 22, 2010Publication date: September 2, 2010Inventors: John Claude Husband, Nigel V. Jarvis, Charles Desmond Payton, David Robert Skuse
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Patent number: 6814796Abstract: A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin whose particles have a particle size distribution such that at least 80% by weight of the particles have an equivalent spherical diameter less than 2 &mgr;m and not less than 8%, preferably not less than 12%, by weight of the particles have an equivalent spherical diameter less than 0.25 &mgr;m and whose particles have a shape factor of at least 45, preferably at least 50.Type: GrantFiled: June 30, 2003Date of Patent: November 9, 2004Assignee: Imerys Pigments, Inc.Inventors: John Claude Husband, Desmond Charles Payton, Michele Susan Renals
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Publication number: 20040110885Abstract: A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin whose particles have a particle size distribution such that at least 80% by weight of the particles have an equivalent spherical diameter less than 2 &mgr;m and not less than 8%, preferably not less than 12%, by weight of the particles have an equivalent spherical diameter less than 0.25 &mgr;m and whose particles have a shape factor of at least 45, preferably at least 50.Type: ApplicationFiled: June 30, 2003Publication date: June 10, 2004Inventors: John Claude Husband, Desmond Charles Payton, Michele Susan Renals
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Patent number: 6616749Abstract: A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin whose particles have a particle size distribution such that at least 80% by weight of the particles have an equivalent spherical diameter less than 2 &mgr;m and not less than 8%, preferably not less than 12%, by weight of the particles have an equivalent spherical diameter less than 0.25 &mgr;m and whose particles have a shape factor of at least 45, preferably at least 50.Type: GrantFiled: October 4, 2000Date of Patent: September 9, 2003Assignee: Imerys Pigments, Inc.Inventors: John Claude Husband, Desmond Charles Payton, Michele Susan Renals
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Patent number: 6610137Abstract: A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin produced from a naturally platy kaolin clay having a particle size distribution such that about 50% to 60% by weight of the particles have an esd less than 2 &mgr;m and less than 25% by weight of the particles have an esd less than 0.25 &mgr;m and a shape factor of at least 15. In processing, the crude kaolin is ground to a shape factor greater than 50 to produce even greater “platy” clay. The pigment product has a particle size distribution such that at least 80% by weight of the particles have an esd less than 2 &mgr;m and greater than 12% and less than 35% by weight of the particles have an esd less than 0.25 &mgr;m and whose surface area is greater than 12 m2/g when measured by the BET method.Type: GrantFiled: August 26, 2002Date of Patent: August 26, 2003Assignee: Imerys Pigments, Inc.Inventors: Christopher R. L. Golley, Daniel John Panfil, Harry Vincent Brown, Jr., John Claude Husband
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Publication number: 20030094120Abstract: A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin produced from a naturally platy kaolin clay having a particle size distribution such that about 50% to 60% by weight of the particles have an esd less than 2 &mgr;m and less than 25% by weight of the particles have an esd less than 0.25 &mgr;m and a shape factor of at least 15. In processing, the crude kaolin is ground to a shape factor greater than 50 to produce even greater “platy” clay. The pigment product has a particle size distribution such that at least 80% by weight of the particles have an esd less than 2 &mgr;m and greater than 12% and less than 35% by weight of the particles have an esd less than 0.25 &mgr;m and whose surface area is greater than 12 m2/g when measured by the BET method.Type: ApplicationFiled: August 26, 2002Publication date: May 22, 2003Applicant: IMERYS PIGMENTS, INC.Inventors: Christopher R.L. Golley, Daniel John Panfil, Harry Vincent Brown, John Claude Husband
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Patent number: 6537363Abstract: A pigment product suitable for use in a coating composition to provide a gloss coating on paper, the pigment product comprising a processed particulate kaolin produced from a naturally platy kaolin clay having a particle size distribution such that about 50% to 60% by weight of the particles have an esd less than 2 &mgr;m and less than 25% by weight of the particles have an esd less than 0.25 &mgr;m and a shape factor of at least 15. This platy clay can be blended with b-fraction clay component. In processing, the crude kaolin is ground to a shape factor greater than 50 to produce even greater “platy” clay. The pigment product has a particle size distribution such that at least 80% by weight of the particles have an esd less than 2 &mgr;m and greater than 12% and less than 35% by weight of the particles have an esd less than 0.25 &mgr;m and whose surface area is greater than 12 m2/g when measured by the BET method.Type: GrantFiled: December 20, 2001Date of Patent: March 25, 2003Assignee: Imerys Pigments, Inc.Inventors: Christopher R. L. Golley, Daniel John Panfil, Harry Vincent Brown, Jr., John Claude Husband
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Patent number: 5885340Abstract: A method of producing a multiple coated cellulosic sheet product having a surface which is smooth, bright and capable of being printed upon, includes the steps of coating a substrate comprising a cellulosic sheet with a first layer of an inorganic pigment-containing aqueous coating composition, and coating the first layer with a second layer of an inorganic pigment-containing aqueous coating composition to form a product in which the first layer is bonded to the cellulosic sheet and the second layer is bonded to and inseparable from the first layer, wherein there is incorporated into the first layer a sizing agent in an amount of up to 0.6% by weight based on the dry weight of the pigment present in the first layer. The sizing agent is selected from alkene ketene dimers, alkenyl succinic anhydrides, and anionic polyurethane sizes.Type: GrantFiled: October 27, 1997Date of Patent: March 23, 1999Assignee: ECC International Ltd.Inventors: David Frederick Bailey, John Claude Husband, Ulrika Reimer
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Patent number: 5731034Abstract: A method of coating paper with a paper coating composition having a solids concentration of at least 45% by weight, consisting essentially of an aqueous cationic dispersion of a particulate calcium carbonate pigment and a nonionic or cationic adhesive, wherein the pigment has a particle size distribution such that no more than 1% by weight of the particles have an equivalent spherical diameter larger than 10 microns, at least 65% by weight of the particles have an equivalent spherical diameter smaller than 2 microns and not more than 10% by weight of the particles have an equivalent spherical diameter smaller than 0.25 micron, and wherein said pigment is dispersed with a combination of a cationic polyelectrolyte and an anionic polyelectrolyte, with the amount of cationic polyelectrolyte being in the range of about 0.01% to about 1.5% by weight, based on the weight of the dry pigment, and with the amount of anionic polyelectrolyte being in the range of about 0.01% to about 0.5% by weight.Type: GrantFiled: December 2, 1996Date of Patent: March 24, 1998Assignee: ECC International LimitedInventor: John Claude Husband