Patents by Inventor Harry A. Mitchell
Harry A. Mitchell 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: 20120194195Abstract: A method and system is provided for minimizing delays in a magnetic ranging method. Delays are minimized by establishing synchronicity between triggering of a three-axis magnetometer and energisation of a solenoid assembly deployed in the borehole being drilled and the first borehole, respectively. Synchronicity enables measuring various components of the alternating magnetic field created by energisation of the solenoid assembly by the magnetometer, the moment the solenoid assembly is energised. The recorded components are used for computation of steering data for drilling the second borehole relative to the first borehole. The steering data can be determined at the surface or downhole.Type: ApplicationFiled: January 28, 2011Publication date: August 2, 2012Applicant: Precision Energy Services, Inc.Inventors: MacMillan M. Wisler, Robert A. Aiello, Tommy L. Binford, JR., Harry Mitchell Collins, James Douglas Elmore, John D. Martin
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Publication number: 20080090060Abstract: Composite articles are prepared by a spray up operation. In a first step, a gel coat is applied onto a mold surface which has been optionally pretreated with a mold release coating. Next, a barrier coat is applied over the gel coat in the mold and thereafter a laminate formula is applied over the barrier coat. The laminate contains from 40-80% by weight paste and from 20-60% by weight reinforcing fibers. In a preferred embodiment, the paste comprises 90% or more by weight resin, up to 10% filler, and an initiator composition capable of initiating cure at a temperature of 50° C. or lower. In a preferred embodiment, the multilayer composite has a thickness of about 15 mm or less, and is useful as an automobile body panel. The laminate preferably comprises a low shrink, low density glass fiber filled polyester resin.Type: ApplicationFiled: December 11, 2007Publication date: April 17, 2008Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Hamid Kia, Harry Mitchell, Terrence Wathen, Mark Buffa
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Patent number: 7341785Abstract: Composite articles are prepared by a spray up operation. In a first step, a gel coat is applied onto a mold surface which has been optionally pretreated with a mold release coating. Next, a barrier coat is applied over the gel coat in the mold and thereafter a laminate formula is applied over the barrier coat. The laminate contains from 40-80% by weight paste and from 20-60% by weight reinforcing fibers. In a preferred embodiment, the paste comprises 90% or more by weight resin, up to 5% filler, and an initiator composition capable of initiating cure at a temperature of 50° C. or lower. In a preferred embodiment, the multilayer composite has a thickness of about 15 mm or less, and is useful as an automobile body panel. The laminate preferably comprises a low shrink, low density glass fiber filled polyester resin.Type: GrantFiled: June 20, 2003Date of Patent: March 11, 2008Assignee: General Motors CorporationInventors: Hamid G Kia, Harry A Mitchell, Terrence J Wathen, Mark A Buffa
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Patent number: 7226665Abstract: A multilayer composite contains a gel coat layer, a laminate layer, and a barrier layer disposed between the gel coat and the laminate layer. The laminate contains from 40–80% by weight paste and from 20–60% by weight reinforcing fibers. The barrier coat also comprises a cured polyester resin, and contains reinforcing fibers shorter than those in the laminate layer. The barrier layer has sufficient flexibility to avoid cracking during demolding and handling. Preferably, the barrier layer exhibits an elongation at break of more than 1%, and more preferably about 2% or more. The resin of the barrier layer can contain up to about 25% by weight of the resin of an isophthalic acid based polyester resin. The composites can be made using an open tool molding process.Type: GrantFiled: June 20, 2003Date of Patent: June 5, 2007Assignee: General Motors CorporationInventors: Hamid G Kia, Terrence J Wathen, Mark A Buffa, Harry A Mitchell
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Publication number: 20040038059Abstract: A multilayer composite contains a gel coat layer, a laminate layer, and a barrier layer disposed between the gel coat and the laminate layer. The laminate contains from 40-80% by weight paste and from 20-60% by weight reinforcing fibers. The barrier coat also comprises a cured polyester resin, and contains reinforcing fibers shorter than those in the laminate layer. The barrier layer has sufficient flexibility to avoid cracking during demolding and handling. Preferably, the barrier layer exhibits an elongation at break of more than 1%, and more preferably about 2% or more. The resin of the barrier layer can contain up to about 25% by weight of the resin of an isophthalic acid based polyester resin. The composites can be made using an open tool molding process.Type: ApplicationFiled: June 20, 2003Publication date: February 26, 2004Inventors: Hamid G. Kia, Terrence J. Wathen, Mark A. Buffa, Harry A. Mitchell
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Publication number: 20040023012Abstract: Composite articles are prepared by a spray up operation. In a first step, a gel coat is applied onto a mold surface which has been optionally pretreated with a mold release coating. Next, a barrier coat is applied over the gel coat in the mold and thereafter a laminate formula is applied over the barrier coat. The laminate contains from 40-80% by weight paste and from 20-60% by weight reinforcing fibers. In a preferred embodiment, the paste comprises 90% or more by weight resin, up to 5% filler, and an initiator composition capable of initiating cure at a temperature of 50° C. or lower. In a preferred embodiment, the multilayer composite has a thickness of about 15 mm or less, and is useful as an automobile body panel. The laminate preferably comprises a low shrink, low density glass fiber filled polyester resin.Type: ApplicationFiled: June 20, 2003Publication date: February 5, 2004Inventors: Hamid G. Kia, Harry A. Mitchell, Terrence J. Wathen, Mark A. Buffa
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Patent number: 4474845Abstract: A method is provided for compacting viscous polymeric molding compositions preparatory to compression molding to substantially improve the physical properties of articles molded therefrom. Suitable compositions include those filled with a geometric reinforcing particulate filler that are flowable and thermosettable when compression molded. The method comprises forming a slab of a said filler composition and thereafter reducing its thickness by passing it between spaced-apart pairs of compression means. The pair members of the means are spaced apart to ultimately substantially reduce its thickness. The method yields unexpected improvements in the tensile strength, isotropy and surface characteristics of articles compression molded from the compounds.Type: GrantFiled: August 26, 1982Date of Patent: October 2, 1984Assignee: General Motors CorporationInventors: Edward M. Hagerman, Harry A. Mitchell
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Patent number: 4012800Abstract: A bed in the form of a sleeping bag constructed of a sleeping bag cover assembly mounted on a mattress and a frame on which the mattress and cover assembly is supported. The cover assembly partially encloses the mattress and is releasably secured to the frame to retain the mattress and the cover assembly thereon.Type: GrantFiled: July 15, 1975Date of Patent: March 22, 1977Inventors: Harry Mitchell, William Augustine May
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Patent number: D689354Type: GrantFiled: May 19, 2011Date of Patent: September 10, 2013Assignee: Echo Therapeutics, Inc.Inventors: Harry Mitchell, Keith Krystyniak, Joseph O. St. Cyr, Steven Vordenberg, Christopher Labak, Jon Taylor, James Joseph Kennedy, III, Glenn Trainer, Benjamin Glace, Edward McLean, Wayne Menzie