Bitumen Patents (Class 162/171)
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Patent number: 11560524Abstract: Disclosed are a pulverized coal preprocessing method and a pulverized coal gasifying method. The pulverized coal preprocessing method comprises the following steps: (1) performing pore broadening on pulverized coal to obtain preprocessed pulverized coal; (2) loading alkali metal ions into the preprocessed pulverized coal under an ion exchange condition to obtain alkali metal loaded pulverized coal. The method further comprises loading a chrome complex into the alkali metal loaded pulverized coal obtained in described step (2). In gasification, the pulverized coal loaded with alkali metal potassium and chrome catalysts obtained by the method has the advantages of high sulphur removal rate, high carbon conversion rate, short gasifying reaction time and high methane production.Type: GrantFiled: October 28, 2019Date of Patent: January 24, 2023Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC NANJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY CO., LTD.Inventors: Jinli Wang, Jin Cai, Yang Yu, Yusheng Yin, Haitao Li, Yanfang Zhu, Xianliang Huang, Huijun Wang, Bengang Xu, Jie Zhang, Xueqi Wu, Lin Wu
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Patent number: 8852401Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: December 17, 2013Date of Patent: October 7, 2014Assignee: W. R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Publication number: 20140102653Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: December 17, 2013Publication date: April 17, 2014Applicant: W. R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Patent number: 8632660Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: March 15, 2013Date of Patent: January 21, 2014Assignee: W. R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Patent number: 8632661Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: March 15, 2013Date of Patent: January 21, 2014Assignee: W. R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Patent number: 8562788Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: January 23, 2013Date of Patent: October 22, 2013Assignee: W. R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Patent number: 8562790Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: January 23, 2013Date of Patent: October 22, 2013Assignee: W. R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Patent number: 8562789Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: January 23, 2013Date of Patent: October 22, 2013Assignee: W. R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Patent number: 8518217Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: June 15, 2012Date of Patent: August 27, 2013Assignee: W. R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Publication number: 20130202876Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: March 15, 2013Publication date: August 8, 2013Applicant: W. R. MEADOWS, INC.Inventor: W. R. MEADOWS, INC.
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Publication number: 20130202877Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: March 15, 2013Publication date: August 8, 2013Applicant: W. R. MEADOWS, INC.Inventor: W.R. Meadows, Inc.
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Publication number: 20130153165Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: February 21, 2013Publication date: June 20, 2013Applicant: W. R. MEADOWS, INC.Inventor: W. R. Meadows, Inc.
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Publication number: 20130126115Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: January 23, 2013Publication date: May 23, 2013Applicant: W. R. MEADOWS, INC.Inventor: W. R. MEADOWS, INC.
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Patent number: 8422743Abstract: The present invention provides a surface-reading apparatus that includes a subject-flexing mechanism and a surface-reading component. The subject-flexing mechanism causes a subject to flex in one of a convex form and a concave form. The surface-reading component reads a characteristic of a surface condition of the subject that has been flexed by the subject-flexing mechanism. The surface-reading component can includes an optical reading component that optically reads the characteristic of the surface condition of the subject. The optical reading component may be a reflected light-reading component that reads the characteristic of the surface condition of the subject with reflected light or may be a transmitted light-reading component that reads the characteristic of the surface condition of the subject with transmitted light.Type: GrantFiled: May 16, 2007Date of Patent: April 16, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Tadashi Shimizu, Tetsuya Kimura, Kensuke Ito
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Patent number: 8382952Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: June 18, 2012Date of Patent: February 26, 2013Assignee: W. R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Patent number: 8382953Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: July 13, 2012Date of Patent: February 26, 2013Assignee: W. R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Patent number: 8382951Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: June 18, 2012Date of Patent: February 26, 2013Assignee: W. R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Publication number: 20120279670Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: July 13, 2012Publication date: November 8, 2012Applicant: W.R. MEADOWS, INC.Inventor: Tariq Mahmood Malik
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Publication number: 20120247701Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: June 18, 2012Publication date: October 4, 2012Applicant: W.R. MEADOWS, INC.Inventor: Tariq Mahmood Malik
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Publication number: 20120247700Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: June 18, 2012Publication date: October 4, 2012Applicant: W.R. MEADOWS, INC.Inventor: Tariq Mahmood Malik
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Patent number: 8241463Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: September 29, 2011Date of Patent: August 14, 2012Assignee: W.R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Patent number: 8057638Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: September 14, 2010Date of Patent: November 15, 2011Assignee: W.R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Patent number: 8038845Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: September 14, 2010Date of Patent: October 18, 2011Assignee: W.R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Publication number: 20110017416Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: September 14, 2010Publication date: January 27, 2011Applicant: W.R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Publication number: 20110017415Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: September 14, 2010Publication date: January 27, 2011Applicant: W.R. MEADOWS, INC.Inventor: Tariq Mahmood Malik
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Patent number: 7815772Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: GrantFiled: August 29, 2008Date of Patent: October 19, 2010Assignee: W. R. Meadows Inc.Inventor: Tariq Mahmood Malik
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Publication number: 20100055485Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: August 29, 2008Publication date: March 4, 2010Applicant: W.R. Meadows, Inc.Inventor: Tariq Mahmood Malik
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Publication number: 20090084514Abstract: A gypsum board which comprises a set gypsum core sandwiched between and faced with fibrous mats, wherein a free surface of one of said mats is pre-coated with a combination of a mineral pigment, optionally an inorganic adhesive binder and an organic binder, preferably a hydrophobic, UV resistant polymer latex adhesive binder applied to said surface as an aqueous coating composition, said aqueous coating composition upon drying and setting providing a pre-coated mat satisfying certain morphology requirements.Type: ApplicationFiled: September 30, 2008Publication date: April 2, 2009Inventors: Russell SMITH, Brian RANDALL
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Patent number: 7354503Abstract: In one embodiment, a fire retardant composite panel material is fabricated. A water-based slurry comprising partially soluble boric acid and borax pentahydrate solids is created. An adhesive used in the composite panel fabrication process is added to fibers. The water-based slurry is separately added to the adhesive and, after mixing, to the fibers. The composite panel produced thereby is also described.Type: GrantFiled: June 20, 2003Date of Patent: April 8, 2008Assignee: Sierra Pine Ltd.Inventor: Graham Hume
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Patent number: 6737443Abstract: Methods for making the stable dispersion of lignin components of black liquor in bitumen. Representative methods comprising converting an aqueous colloidal dispersion of lignin in spent pulping liquor to an anhydrous colloidal dispersion of lignin in a lubricating oil by mixing a lubricating oil with the spent pulping liquor, and dewatering the mixture so formed at an elevated temperature to form a cream-like paste compatible with bitumen, and mixing said anhydrous colloidal dispersion of lignin with bitumen.Type: GrantFiled: November 20, 2000Date of Patent: May 18, 2004Assignee: Polyphalt Inc.Inventor: Zhi-Zhong Liang
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Publication number: 20020195216Abstract: The invention relates to a method of forming a multicomponent mat, the multicomponent mat which is formed from glass fibers and natural fibers and methods of making a multicomponent mat. Initially in the method of forming a multicomponent mat, a natural fiber slurry is formed. The next step involves using a surfactant to disperse glass fibers in white water. The natural fiber slurry and the slurry of glass fibers are generally compatible and are combined to form a multicomponent slurry which is used to form a multicomponent mat.Type: ApplicationFiled: April 30, 2001Publication date: December 26, 2002Inventor: Daojie Dong
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Patent number: 6488811Abstract: The invention relates to a method of forming a multicomponent mat, the multicomponent mat which is formed from glass fibers and natural fibers and methods of making a multicomponent mat. Initially in the method of forming a multicomponent mat, a natural fiber slurry is formed. The next step involves using a surfactant to disperse glass fibers in white water. The natural fiber slurry and the slurry of glass fibers are generally compatible and are combined to form a multicomponent slurry which is used to form a multicomponent mat.Type: GrantFiled: April 30, 2001Date of Patent: December 3, 2002Assignee: Owens Corning Fiberglas Technology, Inc.Inventor: Daojie Dong
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Patent number: 6149831Abstract: An insulation board suitable for use as a roof insulating board has a density between about 8 and about 15 pounds per cubic foot; a MOR/density ratio of at least 10.5 to 1 and includes, by dry weight, between about 45% and about 76% expanded perlite; between about 15% and about 45% cellulosic fibers; between about 0.1% and about 10% latex binder; between about 2% and about 9% bituminous material; and about 0% to about 3% alum.Type: GrantFiled: February 18, 1999Date of Patent: November 21, 2000Assignee: Johns Manville International, Inc.Inventors: Craig Donald DePorter, Steven Douglas Dawson, Mauro Vittorio Battaglioli, Christopher Paul Sandoval
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Patent number: 6068804Abstract: A process of producing an asphalt-impregnated fiberboard comprises the steps of forming an aqueous slurry of a fibrous material and asphalt, the solids content of the slurry being less than about 8 weight percent, mixing the slurry to uniformly distribute its components, dewatering the slurry to form a wet mat, pressing the wet mat to consolidate it, and drying the consolidated wet mat. Fiberboards made by the process can be employed as durable resilient expansion joints between various types of structural members.Type: GrantFiled: July 2, 1998Date of Patent: May 30, 2000Assignee: Celotex CorporationInventors: William E. Betzner, Fred L. Migliorini
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Patent number: 5749954Abstract: A perlite-based insulation board includes, by dry weight, between about 50% and about 76% expanded perlite; between about 15% and about 45% fibers; between about 1% and about 5% starch; between about 2% and about 9% bituminous material; and about 0% to about 3% alum. The fibers are between about 50% and about 95% by dry weight recycled newsprint fibers and between about 5% and about 50% by dry weight virgin cellulose fibers, such as flax and/or peanut hull fibers. In one embodiment, the virgin cellulose fibers are, by dry weight, between about 10% and 40% flax fibers and about 60% and 90% peanut hull fibers.Type: GrantFiled: July 15, 1996Date of Patent: May 12, 1998Assignee: Johns Manville International, Inc.Inventors: David Chee-Fai Law, Christopher Paul Sandoval, Ruben G. Garcia
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Patent number: 5066984Abstract: A device is disposed in the path of paper sheets leaving a printing unit or processor such as an office copier or non-impact printer and has an arcuate concave guide and a roll spaced from the guide to form a sheet path which is curved or arched oppositely to the direction in which the sheet is curled in the processor. The space between the guide and the roller is greater than the thickness of the paper and the paper is bent in the direction opposite to its curl as it passes through the arched space, while the beam strength of the paper and the change in direction of the paper maintain adequate drive friction on the sheet. A selector isolates the de-curler when it is not needed.Type: GrantFiled: November 17, 1987Date of Patent: November 19, 1991Assignee: Gradco Systems, Inc.Inventor: Peter M. Coombs
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Patent number: 4759977Abstract: A flexible carbon material is produced by carbonizing a composite material comprising carbon fibers having an average length of 6 to 50 mm and a binding agent. Carbon lumps are derived from the binding agent and are dispersed in a matrix of the carbon fibers so as to restrain a plurality of the carbon fibers while yet permitting relative slippage to occur as between the carbon fibers and carbon lumps such that the carbon fiber material exhibits a flexibility ratio D/d of not greater than 200 (where D is the diameter of curvature of the carbon material, when bent, just before breakage, and d is the thickness of the carbon material). The carbon fibers and lumps are preferrably present in an amount of from 5 to 50%, and 5 to 70% by volume, respectively, based upon the total volume of the carbon material.Type: GrantFiled: August 20, 1986Date of Patent: July 26, 1988Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Hiroyuki Fukuda, Yukihiro Shibuya, Kiyomi Ohuchi, Masumi Sagi, Naohiro Murayama, Masatomo Shigeta
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Patent number: 4587070Abstract: This invention provides a method for the manufacture of a fibrous plate rich in water resistance, which comprises the steps of uniformly mixing and dispersing fibrous raw material and finely divided bituminous substance in water, molding the resultant aqueous dispersion in the shape of a plate, and heating the plate with a hot press thereby melting the bituminous substance contained in the fibrous material and converting the plate into a fibrous plate having the bituminous substance uniformly dispersed therein. The fibrous plate obtained by this method excels in water resistance, weatherability, and thermal insulation and passes the standard specification concerning joint plates for use in concrete structures.Type: GrantFiled: March 29, 1984Date of Patent: May 6, 1986Assignee: AOI Chemical, Inc.Inventors: Hajime Niwa, Katsumi Hironaka
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Patent number: 4543158Abstract: Sheet type felt material comprising 5-20 wt % glass fibers, 40-80 wt % cellulose fibers, 5-25 % binder and 3-20 wt % asphalt. The felt is made on conventional felt making equipment and may be used as siding or roofing underlayment or as facer for foam insulating boards.Type: GrantFiled: April 2, 1984Date of Patent: September 24, 1985Assignee: GAF CorporationInventors: Alfredo A. Bondoc, Eugene J. Flood, Frederick W. Sieling
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Patent number: 4472243Abstract: Sheet type felt material and sheet type roofing material such as shingles and rolls made therefrom. The felt comprises 10-60 wt % glass fibers of varying lengths, 15-80 wt % cellulosic fiber and 5-25% binder. The roofing material is felt of the invention saturated with asphaltic saturant and coated with filled asphaltic coating material and conventional roofing granules.Type: GrantFiled: April 2, 1984Date of Patent: September 18, 1984Assignee: GAF CorporationInventors: Alfredo A. Bondoc, Eugene J. Flood, Frederick W. Sieling
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Patent number: 4284470Abstract: High strength roofing products using a novel glass fiber mat are described herein. The roofing products include shingles and built up roofing membranes and systems.Type: GrantFiled: September 26, 1979Date of Patent: August 18, 1981Assignee: GAF CorporationInventor: Alfredo A. Bondoc
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Patent number: 4126512Abstract: A thermal insulating board product, comprising expanded perlite, fibers, and bituminous material, also includes a relatively small amount of starch binder.Type: GrantFiled: November 26, 1973Date of Patent: November 21, 1978Assignee: Johns-Manville CorporationInventor: John A. Hill
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Patent number: 4118273Abstract: Perlite insulation board is produced on a rotary vacuum forming machine utilizing an aqueous slurry containing ultrafine perlite particles. The fine perlite particles slow down the rate of stock deposition on the facing wire of the rotary vacuum former, and permit the rotary vacuum former to operate at a desirable forming speed.Type: GrantFiled: September 20, 1974Date of Patent: October 3, 1978Assignee: Johns-Manville CorporationInventors: Gilbert Godin, Fred C. Norgard
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Patent number: 3988199Abstract: A perlite insulation board is disclosed herein and includes, as conventional ingredients, expanded perlite, organic fiber and binder, the perlite, being the largest single ingredient, by dry weight, in the board. The insulation board also includes gypsum in an amount less than the perlite but preferably in an amount sufficient to form a gypsum matrix throughout the board. A method of making a perlite insulation board of the general type just described is also disclosed herein.Type: GrantFiled: January 27, 1975Date of Patent: October 26, 1976Assignee: Johns-Manville CorporationInventors: Roy Wayne Hillmer, Nicholas Francis Morrone, Chester Robert Slahetka
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Patent number: 3985610Abstract: An improved low density asbestos-cement product and the process whereby it is produced wherein an asphalt emulsion is combined with the formulation from which the product is made, which asphalt emulsion has an asphalt phase which asphalt has a softening point of at least 150.degree.F and is dispersed in water in globules all smaller than 10 microns.Type: GrantFiled: January 7, 1974Date of Patent: October 12, 1976Assignee: National Gypsum CompanyInventors: Robert C. Pomerhn, Robert M. Johnson
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Patent number: 3943269Abstract: The process for producing roofing felt which is softer, more flexible and more fire-resistant than such felt commonly produced by the prior art and which consists of permeating the felt stock with a treating fluid comprising a mixture of oil and soda ladened water, next drying the treated felt stock to remove excess moisture therefrom, next impregnating the felt with heated molten asphalt, next permitting excess molten asphalt to drain therefrom and finally permitting the asphalt in the felt to cool.Type: GrantFiled: May 24, 1974Date of Patent: March 9, 1976Inventor: David B. Bell