Patents by Inventor Jan van Egmond
Jan van Egmond 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: 20240150503Abstract: A propylene-ethylene copolymer includes propylene as a primary monomer, an ethylene content (ET) of 3.0% to 5% by weight, a melt flow rate of from 20 to 45 g/10 min, a xylene soluble fraction (XS) of from 2.0% to 7.0% by weight, and an XS/ET ratio of less than or equal to 1.51.Type: ApplicationFiled: December 5, 2023Publication date: May 9, 2024Applicant: W.R. GRACE & CO.-CONN.Inventors: Matthew Fedec, Jan Van Egmond, Manu Rego, John Kaarto, Li-Min Tau
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Publication number: 20230331882Abstract: Olefin polymers are produced having an ultra-high melt flow rate. The olefin polymers can be used to produce meltblown fibers and meltblown webs, which can then be incorporated into protective apparel. The polyolefin polymer is produced using a Ziegler-Natta catalyst and without having to use peroxides in order to obtain the high melt flow rate.Type: ApplicationFiled: September 9, 2021Publication date: October 19, 2023Applicant: W. R. Grace & Co.-Conn.Inventor: Jan Van Egmond
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Patent number: 11577938Abstract: The present invention relates to a method for installing a wind turbine or other tall structure at a target location at sea, the method comprising: —providing an installation vessel comprising at least one crane, wherein the crane comprises a lower boom part, a right boom part, and a left boom part, wherein the right boom part and the left boom part are connected to an upper portion of the lower boom part and extend from said upper portion, wherein a space is present between the right and left boom part, —lifting a tall structure part, in particular the nacelle assembly, with the crane, wherein in top view the tall structure part is supported at least partially between the right and left boom part by one or more hoist lines extending from the right and left boom part to the tall structure part.Type: GrantFiled: June 14, 2019Date of Patent: February 14, 2023Assignee: Heerema Marine Contractors Nederland SEInventor: Jan Van Egmond
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Patent number: 11446623Abstract: The present disclosure relates to methods for controlling gas phase polymerization reactors. A method for controlling a fluidized bed reactor can include forming a fluidized bed in a reactor followed by discharge of polymer product from the reactor to a product discharge tank. The polymer product can then be discharged from the product discharge tank to a blow tank and the pressure of the blow tank is measured. The pressure measured in the blow tank can then be used to control the reactor by changing one or more reactor operating inputs based on the measured blow tank pressure.Type: GrantFiled: December 14, 2018Date of Patent: September 20, 2022Assignee: W. R. Grace & Co.-ConnInventors: Jeffrey Drabish, Jan Van Egmond, Thomas Gelzer
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Patent number: 11421056Abstract: The present disclosure is generally directed to polyolefin polymers, such as polypropylene homopolymers, and propylene-ethylene copolymers that have improved flow properties. In one embodiment, the polymers can be produced using a solid catalyst component that includes a) dissolving a halide-containing magnesium compound in a mixture, the mixture including an epoxy compound, an organic phosphorus compound, and a hydrocarbon solvent to form a homogenous solution; b) treating the homogenous solution with an organosilicon compound during or after the dissolving step; c) treating the homogenous solution with a first titanium compound in the presence of a first non-phthalate electron donor, and an organosilicon compound, to form a solid precipitate; and d) treating the solid precipitate with a second titanium compound in the presence of a second non-phthalate electron donor to form the solid catalyst component, where the process is free of carboxylic acids and anhydrides.Type: GrantFiled: November 13, 2018Date of Patent: August 23, 2022Assignee: W.R. GRACE & CO.-CONN.Inventors: Vladimir P. Marin, Jan Van Egmond, Ahmed Hintolay
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Publication number: 20220144975Abstract: Olefin polymers are produced having a relatively high bulk density and a dramatically reduced amount of fines. The polymers are produced using a catalyst system containing a selectivity control agent. In one embodiment, the selectivity control agent is diisobutyldimethoxysilane.Type: ApplicationFiled: March 13, 2020Publication date: May 12, 2022Inventors: Jan VAN EGMOND, Stephen Lee VAN PELT
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Publication number: 20210261386Abstract: The present invention relates to a method for installing a wind turbine or other tall structure at a target location at sea, the method comprising: providing an installation vessel comprising at least one crane, wherein the crane comprises a lower boom part, a right boom part, and a left boom part, wherein the right boom part and the left boom part are connected to an upper portion of the lower boom part and extend from said upper portion, wherein a space is present between the right and left boom part, lifting a tall structure part, in particular the nacelle assembly, with the crane, wherein in top view the tall structure part is supported at least partially between the right and left boom part by one or more hoist lines extending from the right and left boom part to the tall structure part.Type: ApplicationFiled: June 14, 2019Publication date: August 26, 2021Inventor: Jan VAN EGMOND
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Publication number: 20200406213Abstract: The present disclosure relates to methods for controlling gas phase polymerization reactors. A method for controlling a fluidized bed reactor can include forming a fluidized bed in a reactor followed by discharge of polymer product from the reactor to a product discharge tank. The polymer product can then be discharged from the product discharge tank to a blow tank and the pressure of the blow tank is measured. The pressure measured in the blow tank can then be used to control the reactor by changing one or more reactor operating inputs based on the measured blow tank pressure.Type: ApplicationFiled: December 14, 2018Publication date: December 31, 2020Inventors: Jeffrey DRABISH, Jan VAN EGMOND, Thomas GELZER
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Publication number: 20200270381Abstract: The present disclosure is generally directed to polyolefin polymers, such as polypropylene homopolymers, and propylene-ethylene copolymers that have improved flow properties. In one embodiment, the polymers can be produced using a solid catalyst component that includes a) dissolving a halide-containing magnesium compound in a mixture, the mixture including an epoxy compound, an organic phosphorus compound, and a hydrocarbon solvent to form a homogenous solution; b) treating the homogenous solution with an organosilicon compound during or after the dissolving step; c) treating the homogenous solution with a first titanium compound in the presence of a first non-phthalate electron donor, and an organosilicon compound, to form a solid precipitate; and d) treating the solid precipitate with a second titanium compound in the presence of a second non-phthalate electron donor to form the solid catalyst component, where the process is free of carboxylic acids and anhydrides.Type: ApplicationFiled: November 13, 2018Publication date: August 27, 2020Inventors: Vladimir P. Marin, Jan Van Egmond, Ahmed Hintolay
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Publication number: 20100104370Abstract: The present invention relates to a fixation device for fixation of a position of an inner pipe of a double-walled pipe with respect to a pipe laying structure and/or an outer pipe of said double-walled pipe, said fixation device comprising: an inner pipe gripping device (23) configured to grip said inner pipe, and a connection device (24,25,2S) configured to connect said inner pipe gripping device with said pipe laying structure and/or said outer pipe, said connection device having a flexible state in which, during use, the inner pipe gripping device is movable with respect to said pipe laying structure and/or said outer pipe, and a fixation state in which, during use, the inner pipe gripping device is fixated with respect to the pipe-laying structure and/or said outer pipe.Type: ApplicationFiled: October 4, 2006Publication date: April 29, 2010Applicant: HEEREMA MARINE CONTRACTORS NEDERLAND B.V.Inventor: Jan van Egmond
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Publication number: 20060241255Abstract: A supported catalyst composition and process for preparing high molecular weight polymers of one or more addition polymerizable monomers, especially propylene, said composition comprising: 1) a substrate comprising the reaction product of a solid, particulated, high surface area, metal oxide, metalloid oxide, or a mixture thereof and an organoaluminum compound, 2) a hafnium complex of a polyvalent, Lewis base ligand; and optionally, 3) an activating cocatalyst for the metal complex.Type: ApplicationFiled: June 22, 2006Publication date: October 26, 2006Inventors: Joseph Coalter, Jan Van Egmond, Lewis Fouts, Roger Painter, Paul Vosejpka
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Publication number: 20060142152Abstract: A catalyst composition, method of formation and process of use in the polymerization of olefin monomers, said composition comprising a catalyst compound, an activator capable of converting said catalyst compound into an active catalyst for addition polymerization, optionally a carrier, further optionally a liquid diluent, and a hydroxycarboxylate metal salt additive.Type: ApplicationFiled: February 20, 2004Publication date: June 29, 2006Inventors: Joseph Coalter III, Curt Theriault, Jan Van Egmond, Roger Painter
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Publication number: 20050244578Abstract: A field coating system comprises a chassis and a plurality of modules coupled to the chassis.Type: ApplicationFiled: April 28, 2004Publication date: November 3, 2005Applicant: Heerema Marine Contractors Nederland B.V.Inventors: Jan Van Egmond, Cornelis Van Zandwijk