Patents by Inventor Scott T. Roger
Scott T. Roger 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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Patent number: 11117979Abstract: Processes and apparatus for preparing bimodal polymers are provided. In some embodiments, processes include introducing a monomer, a first diluent, a catalyst, hydrogen, at a first hydrogen concentration, and optional comonomer, to a first loop reactor to produce, under polymerization conditions, a first slurry of polymer solids. Processes may also include continuously discharging the first slurry of polymer solids from the loop reactor as a first polymerization effluent to a first flash tank; separating the first polymerization effluent in the first flash tank to provide a first concentrated polymer slurry with significantly lower hydrogen concentration; and transferring the first concentrated polymer slurry from the flash tank to a re-slurry mixer. Processes may further include introducing a re-slurry mixer diluent to the first concentrated polymer slurry to form a second concentrated polymer slurry in the re-slurry mixer that can be pumped to a second slurry loop reactor.Type: GrantFiled: August 20, 2020Date of Patent: September 14, 2021Assignee: ExxonMobil Chemical Patents Inc.Inventors: Keith W. Trapp, Scott T. Roger, James A. Kendrick, Edward F. Smith
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Publication number: 20210079125Abstract: Processes and apparatus for preparing bimodal polymers are provided. In some embodiments, processes include introducing a monomer, a first diluent, a catalyst, hydrogen, at a first hydrogen concentration, and optional comonomer, to a first loop reactor to produce, under polymerization conditions, a first slurry of polymer solids. Processes may also include continuously discharging the first slurry of polymer solids from the loop reactor as a first polymerization effluent to a first flash tank; separating the first polymerization effluent in the first flash tank to provide a first concentrated polymer slurry with significantly lower hydrogen concentration; and transferring the first concentrated polymer slurry from the flash tank to a re-slurry mixer. Processes may further include introducing a re-slurry mixer diluent to the first concentrated polymer slurry to form a second concentrated polymer slurry in the re-slurry mixer that can be pumped to a second slurry loop reactor.Type: ApplicationFiled: August 20, 2020Publication date: March 18, 2021Inventors: Keith W. Trapp, Scott T. Roger, James A. Kendrick, Edward F. Smith
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Patent number: 7698827Abstract: A bevel setting tool having a rectangular plate, both sides of which are marked with reference indicia and a moveable fence that slides longitudinally on a stud that passes from the fence through a slot centrally located in the plate and into a locking knob. The fence and knob may be disassembled so that the fence can be positioned on either side of the plate.Type: GrantFiled: September 5, 2006Date of Patent: April 20, 2010Assignee: Lee Valley Tools, Ltd.Inventors: Robin C. Lee, John S. Pratt, Scott T. Roger
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Patent number: 7691955Abstract: The present invention relates to the removal of hydrocarbon residues from a catalyst and more specifically the air activation of a catalyst containing hydrocarbon residues. It also relates to extruded pipe and utility conduit resins comprising polyethylene, household/industrial chemicals container resins, and to a polyethylene resin particularly suitable for large parts by blow molding and sheet extrusion procedures, wherein the resin is made by a process using an activated chromium and titanium-based catalyst.Type: GrantFiled: May 1, 2008Date of Patent: April 6, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Scott T. Roger, Thomas W. Towles, Anthony N. Speca, Stanley J. Katzen
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Patent number: 7641035Abstract: An out-feed roller support stand having a sturdy, stable base that folds for compact storage. A support mast that telescopes into and is adjustable within the base supports a work support head that includes an adjustable cross bar on which a row of pivoting caster wheels are mounted. An alternative embodiment includes a ramp for guiding sagging ends of work-pieces up onto the caster wheels. Both the height and angle between the adjustable cross bar and floor are adjustable after the position of the support mast has been adjusted in order to position the support head in roughly the correct location.Type: GrantFiled: October 12, 2004Date of Patent: January 5, 2010Assignee: Lee Valley Tools, Ltd.Inventors: Robin C. Lee, Steven K. Jones, Scott T. Roger
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Patent number: 7632901Abstract: Methods of making supported chromium catalyst systems and processes of polymerizing ethylene using the supported chromium catalyst systems are disclosed. A method of forming a catalyst system in a polymerization reactor includes contacting a supported chromium catalyst and a metal alkyl cocatalyst by cofeeding the catalyst and cocatalyst to the reactor or feeding the catalyst and cocatalyst separately to the reactor, to form a catalyst system. The catalyst and cocatalyst are not pre-contacted prior to the feeding or cofeeding step. The catalyst system can be contacted with ethylene and optional alpha-olefin comonomer to form polyethylene.Type: GrantFiled: June 6, 2003Date of Patent: December 15, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stanley J. Katzen, Zerong Lin, Anthony N. Speca, James A. Kendrick, Scott T. Roger
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Patent number: 7553216Abstract: A honing guide and bevel setting jig for removable attachment to the honing guide to properly position the angle and projection of a tool to be sharpened in the jig to enable the tool to be honed at the proper angle and position. An adjustable roller that contacts an abrasive surface during use of the guide facilitates formation of micro bevels. A tool securing bar having a generally triangular shape in the bar's middle section forces the arris-defining back of the tool being honed against a reference surface in the guide by tightening thumb nuts around threaded studs projecting from the bar. Jigs for use with both square and skew edge chisel and blades are described. A concave surface clamp bar honing guide provides enhanced gripping of the tool being honed, and wedges and adjustable structures expand the range of bevel angles that can be honed.Type: GrantFiled: April 16, 2004Date of Patent: June 30, 2009Assignee: Lee Valley Tools, Ltd.Inventors: Brent K. Hyde, Steven K. Jones, Robin C. Lee, Scott T. Roger, Terry R. Saunders, Matthew B. Siemers
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Publication number: 20080234449Abstract: The present invention relates to the removal of hydrocarbon residues from a catalyst and more specifically the air activation of a catalyst containing hydrocarbon residues. It also relates to extruded pipe and utility conduit resins comprising polyethylene, household/industrial chemicals container resins, and to a polyethylene resin particularly suitable for large parts by blow molding and sheet extrusion procedures, wherein the resin is made by a process using an activated chromium and titanium-based catalyst.Type: ApplicationFiled: May 1, 2008Publication date: September 25, 2008Inventors: Scott T. Roger, Thomas W. Towles, Anthony N. Speca, Stanley J. Katzen
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Patent number: 7419148Abstract: A variable angle flexible band clamping corner for clamping work piece angles in desired locations to permit nailing, screwing, gluing, or otherwise joining the work pieces. The clamping corner consists of two pivotable contact pads, where the face of each contact pad extends on both sides of the face of the other contact pad. The contact pads can be either constant width fingers that bypass each other when pivoting, or a wide pad with thinner fingers extending from the pad, where the fingers interleave with each other. A corner formed by two work pieces positioned between the two contact pads remains aligned by the force of the face of each contact pad. The clamping corner includes a body that receives force and transmits the force to the contact pads which hold the work piece corner in place.Type: GrantFiled: October 17, 2005Date of Patent: September 2, 2008Assignee: Lee Valley Tools, Ltd.Inventors: Steven K. Jones, Scott T. Roger
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Patent number: 7384885Abstract: The present invention relates to the removal of hydrocarbon residues from a catalyst and more specifically the air activation of a catalyst containing hydrocarbon residues. It also relates to extruded pipe and utility conduit resins comprising polyethylene, household/industrial chemicals container resins, and to a polyethylene resin particularly suitable for large parts by blow molding and sheet extrusion procedures, wherein the resin is made by a process using an activated chromium and titanium-based catalyst.Type: GrantFiled: February 16, 2005Date of Patent: June 10, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Scott T. Roger, Thomas W. Towles, Anthony N. Speca, Stanley J. Katzen
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Patent number: 6921798Abstract: Polymerization processes are disclosed for producing polyethylene having a target density and improved environmental stress resistance. Ethylene and optionally one or more ?-olefin comonomers, supported chromium catalyst, and metal alkyl cocatalyst are contacted to produce polyethylene. The density of the polyethylene is determined, and the concentration of cocatalyst is adjusted in response to a deviation between the density of the polyethylene and the target density. The catalyst and cocatalyst can be fed separately into the reactor, or can be co-fed, eliminating the need to pre-contact the catalyst and cocatalyst prior to introducing them into the reactor.Type: GrantFiled: June 6, 2003Date of Patent: July 26, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: James A. Kendrick, Scott T. Roger, Stanley J. Katzen, Zerong Lin, Anthony N. Speca
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Publication number: 20040192865Abstract: This invention is related to extruded pipe resins comprising polyethylene.Type: ApplicationFiled: February 23, 2004Publication date: September 30, 2004Inventors: Scott T. Roger, Thomas W. Towles, Anthony N. Speca, Stanley J. Katzen
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Publication number: 20030232715Abstract: Methods of making supported chromium catalyst systems and processes of polymerizing ethylene using the supported chromium catalyst systems are disclosed. A method of forming a catalyst system in a polymerization reactor includes contacting a supported chromium catalyst and a metal alkyl cocatalyst by cofeeding the catalyst and cocatalyst to the reactor or feeding the catalyst and cocatalyst separately to the reactor, to form a catalyst system. The catalyst and cocatalyst are not pre-contacted prior to the feeding or cofeeding step. The catalyst system can be contacted with ethylene and optional alpha-olefin comonomer to form polyethylene.Type: ApplicationFiled: June 6, 2003Publication date: December 18, 2003Applicant: ExxonMobil Chemical Patents Inc.Inventors: Stanley J. Katzen, Zerong Lin, Anthony N. Speca, James A. Kendrick, Scott T. Roger
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Publication number: 20030232935Abstract: Polymerization processes are disclosed for producing polyethylene having a target density and improved environmental stress resistance. Ethylene and optionally one or more &agr;-olefin comonomers, supported chromium catalyst, and metal alkyl cocatalyst are contacted to produce polyethylene. The density of the polyethylene is determined, and the concentration of cocatalyst is adjusted in response to a deviation between the density of the polyethylene and the target density. The catalyst and cocatalyst can be fed separately into the reactor, or can be co-fed, eliminating the need to pre-contact the catalyst and cocatalyst prior to introducing them into the reactor.Type: ApplicationFiled: June 6, 2003Publication date: December 18, 2003Inventors: James A. Kendrick, Scott T. Roger, Stanley J. Katzen, Zerong Lin, Anthony N. Speca
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Patent number: 6319997Abstract: A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank with a conical bottom defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the slurry/polymer solids and an exit seal chamber of such diameter (d) and length (l) as to maintain a desired volume of concentrated polymer solids/slurry in the exit seal chamber such as to form a pressure seal while continuously discharging a plug flow of concentrated polymer solids/slurry bottom product of said first flash tank from the exit seal chamber through a seal chamber exit reducer with inclined sides defined by substantially straight sides inclined at an angle to tType: GrantFiled: October 5, 2000Date of Patent: November 20, 2001Assignee: ExxonMobil Chemical Patents Inc.Inventors: James A. Kendrick, Thomas W. Towles, Scott T. Roger
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Patent number: 6204344Abstract: A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank with a conical bottom defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the slurry/polymer solids and an exit seal chamber of such diameter (d) and length (l) as to maintain a desired volume of concentrated polymer solids/slurry in the exit seal chamber such as to form a pressure seal while continuously discharging a plug flow of concentrated polymer solids/slurry bottom product of said first flash tank from the exit seal chamber through a seal chamber exit reducer with inclined sides defined by substantially straight sides inclined at an angle to tType: GrantFiled: May 18, 1999Date of Patent: March 20, 2001Assignee: Exxon Chemical Patents, Inc.Inventors: James A. Kendrick, Thomas W. Towles, Scott T. Roger
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Patent number: D538622Type: GrantFiled: June 27, 2005Date of Patent: March 20, 2007Assignee: Lee Valley Tools Ltd.Inventors: Steven K. Jones, Robin C. Lee, Scott T. Roger, Steven Oszmian
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Patent number: D547155Type: GrantFiled: October 31, 2005Date of Patent: July 24, 2007Assignee: Lee Valley Tools, Ltd.Inventors: Matthew B. Siemers, Scott T. Roger
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Patent number: D677179Type: GrantFiled: September 7, 2011Date of Patent: March 5, 2013Assignee: Lee Valley Tools, Ltd.Inventors: Steven K. Jones, Brent K. Hyde, Scott T. Roger