Patents by Inventor Paul John Spencer
Paul John Spencer 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: 20220213314Abstract: An epoxide resin for the manufacture of a fibre-reinforced composite material having fire retardant properties and/or for use as an adhesive or hot-melt adhesive having fire retardant properties, the epoxide resin being halogen-free and phenolic resin-free, the epoxide resin comprising: A. a mixture of (i) at least one first non-halogenated multifunctional epoxide-containing resin which has an epoxide functionality of greater than 2 and (ii) at least one second non-halogenated multifunctional epoxide-containing resin which has an epoxide functionality of less than or equal to 2; B. at least one catalyst for curing the mixture of epoxide-containing resins to form a cured epoxy resin; and C. at least one fire retardant additive for forming an intumescent char when the cured epoxy resin is exposed to a fire, wherein the at least one fire retardant additive comprises expandable flake graphite and wherein the expandable flake graphite is present in a concentration of from 0.09 to 2.Type: ApplicationFiled: April 29, 2020Publication date: July 7, 2022Inventors: Amy Ferris, Paul John Spencer, Laura-Jarie Slade
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Patent number: 11149126Abstract: A prepreg for the manufacture of a fibre-reinforced composite material having fire retardant properties, the prepreg comprising from 42 to 52 wt % of an epoxide resin matrix system and from 48 to 58 wt % fibrous reinforcement, each wt % being based on the total weight of the prepreg, the fibrous reinforcement being at least partially impregnated by the epoxide resin matrix system; wherein the epoxide resin matrix system includes as components: a. a mixture of (i) at least one epoxide-containing resin and (ii) at least one catalyst for curing the at least one epoxide-containing resin; and b. a plurality of solid fillers for providing fire retardant properties to the fibre-reinforced composite material formed after catalytic curing of the at least one epoxide-containing resin, wherein the weight ratio of component a. to component b. is from 1.4:1 to 1.86:1.Type: GrantFiled: November 23, 2018Date of Patent: October 19, 2021Assignee: Gurit (UK) Ltd.Inventors: Paul John Spencer, Glynn John Edwards, Amy Alexandra Ferris
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Publication number: 20210284834Abstract: An epoxide resin for the manufacture of a fibre-reinforced composite material having fire retardant properties and/or for use as an adhesive or hot-melt adhesive having fire retardant properties, the epoxide resin being halogen-free and phenolic resin-free, the epoxide resin having: A. a mixture of (i) at least one first non-halogenated multifunctional epoxide-containing resin which has an epoxide functionality of greater than 2 and (ii) at least one second non-halogenated multifunctional epoxide-containing resin which has an epoxide functionality of less than or equal to 2; B. at least one catalyst for curing the mixture of epoxide-containing resins to form a cured epoxy resin; and C.Type: ApplicationFiled: August 2, 2019Publication date: September 16, 2021Inventors: Laura-Jane Slade, Paul John Spencer, Amy Alexandra Ferris
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Publication number: 20210002439Abstract: A prepreg for the manufacture of a fibre-reinforced composite material having fire retardant properties, the prepreg comprising from 42 to 52 wt % of an epoxide resin matrix system and from 48 to 58 wt % fibrous reinforcement, each wt % being based on the total weight of the prepreg, the fibrous reinforcement being at least partially impregnated by the epoxide resin matrix system; wherein the epoxide resin matrix system includes as components: a. a mixture of (i) at least one epoxide-containing resin and (ii) at least one catalyst for curing the at least one epoxide-containing resin; and b. a plurality of solid fillers for providing fire retardant properties to the fibre-reinforced composite material formed after catalytic curing of the at least one epoxide-containing resin, wherein the weight ratio of component a. to component b. is from 1.4:1 to 1.86:1.Type: ApplicationFiled: November 23, 2018Publication date: January 7, 2021Inventors: Paul John Spencer, Glynn John Edwards, Amy Alexandra Ferris
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Patent number: 10259917Abstract: A prepreg having at least one layer of carbon fibers and a curable thermosetting resin system, the curable thermosetting resin system at least partly impregnating the at least one layer of carbon fibers, wherein the curable thermosetting resin system includes: a curable thermosetting resin including at least one epoxide group, the curable thermosetting resin having an epoxy equivalent weight of from 140 to 180 g/eq; a curing agent for curing the curable thermosetting resin, wherein the curing agent is present in the liquid phase and includes a cyanamide reactive group; and a rheology modifier for the curable thermosetting resin system, wherein the rheology modifier includes at least one of a thermoplastic resin and an inorganic particulate thickener or a mixture thereof.Type: GrantFiled: October 8, 2015Date of Patent: April 16, 2019Assignee: Gurit (UK) Ltd.Inventors: Paul John Spencer, Benjamin Edward Creaser
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Patent number: 10259920Abstract: A prepreg comprising at least one layer of carbon fibers and a curable thermosetting resin system, the curable thermosetting resin system at least partly impregnating the at least one layer of carbon fibers, wherein the curable thermosetting resin system comprises: a. a curable thermosetting resin including at least one epoxide group; b. a curing agent for curing the curable thermosetting resin, wherein the curing agent is present in the liquid phase and includes a cyanamide reactive group; c. an accelerator for accelerating the curing of the thermosetting resin by the curing agent, wherein the accelerator includes at least one urea reactive group; and d. a rheology modifier for the curable thermosetting resin system, wherein the rheology modifier is at least one of a thermoplastic resin and an inorganic particulate thickener or a mixture thereof.Type: GrantFiled: May 16, 2014Date of Patent: April 16, 2019Assignee: Gurit (UK) Ltd.Inventors: Paul John Spencer, Glynn John Edwards, Kate Victoria Redrup
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Patent number: 10016966Abstract: A prepreg for manufacturing a fiber-reinforced composite material, the prepreg comprising a body comprising a layer of fibrous reinforcement impregnated with a matrix resin material, and a powder coating layer of resin material on at least one major surface of the body and adhered to the matrix resin material.Type: GrantFiled: January 17, 2013Date of Patent: July 10, 2018Assignee: Gurit (UK) Ltd.Inventors: Benjamin Creaser Creaser, Paul John Spencer
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Patent number: 9909003Abstract: A prepreg for the manufacture of a fiber-reinforced composite material, the prepreg including: i. an epoxy-resin matrix including: a. at least one non-halogenated epoxide-containing resin which has been chemically modified with at least one of a nitrogen- and/or phosphorous-containing molecule which has been chemically reacted with the epoxide-containing molecule; b. at least one toughening additive comprising an elastomeric or thermoplastic material chemically reacted with the at least one epoxide-containing resin; c. at least one mineral filler to provide fire-retardancy; and d. at least one catalyst for curing the epoxide-containing resin; and ii. a fibrous reinforcement at least partially impregnated by the epoxy resin matrix.Type: GrantFiled: April 20, 2016Date of Patent: March 6, 2018Assignee: Gurit (UK) Ltd.Inventors: Paul John Spencer, Benjamin Edward Creaser
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Publication number: 20170306110Abstract: A prepreg having at least one layer of carbon fibres and a curable thermosetting resin system, the curable thermosetting resin system at least partly impregnating the at least one layer of carbon fibres, wherein the curable thermosetting resin system includes: a curable thermosetting resin including at least one epoxide group, the curable thermosetting resin having an epoxy equivalent weight of from 140 to 180 g/eq; a curing agent for curing the curable thermosetting resin, wherein the curing agent is present in the liquid phase and includes a cyanamide reactive group; and a rheology modifier for the curable thermosetting resin system, wherein the rheology modifier includes at least one of a thermoplastic resin and an inorganic particulate thickener or a mixture thereof.Type: ApplicationFiled: October 8, 2015Publication date: October 26, 2017Inventors: Paul John Spencer, Benjamin Edward Creaser
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Publication number: 20160230001Abstract: A prepreg for the manufacture of a fibre-reinforced composite material, the prepreg including: i. an epoxy-resin matrix including: a. at least one non-halogenated epoxide-containing resin which has been chemically modified with at least one of a nitrogen- and/or phosphorous-containing molecule which has been chemically reacted with the epoxide-containing molecule; b. at least one toughening additive comprising an elastomeric or thermoplastic material chemically reacted with the at least one epoxide-containing resin; c. at least one mineral filler to provide fire-retardancy; and d. at least one catalyst for curing the epoxide-containing resin; and ii. a fibrous reinforcement at least partially impregnated by the epoxy resin matrix.Type: ApplicationFiled: April 20, 2016Publication date: August 11, 2016Inventors: Paul John Spencer, Benjamin Edward Creaser
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Publication number: 20160083543Abstract: A prepreg comprising at least one layer of carbon fibres and a curable thermosetting resin system, the curable thermosetting resin system at least partly impregnating the at least one layer of carbon fibres, wherein the curable thermosetting resin system comprises: a. a curable thermosetting resin including at least one epoxide group; b. a curing agent for curing the curable thermosetting resin, wherein the curing agent is present in the liquid phase and includes a cyanamide reactive group; c. an accelerator for accelerating the curing of the thermosetting resin by the curing agent, wherein the accelerator includes at least one urea reactive group; and d. a rheology modifier for the curable thermosetting resin system, wherein the rheology modifier is at least one of a thermoplastic resin and an inorganic particulate thickener or a mixture thereof.Type: ApplicationFiled: May 16, 2014Publication date: March 24, 2016Inventors: Paul John Spencer, Glynn John Edwards, Kate Victoria Redrup
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Publication number: 20140374018Abstract: A prepreg for manufacturing a fibre-reinforced composite material, the prepreg comprising a body comprising a layer of fibrous reinforcement impregnated with a matrix resin material, and a powder coating layer of resin material on at least one major surface of the body and adhered to the matrix resin materialType: ApplicationFiled: January 17, 2013Publication date: December 25, 2014Inventors: Benjamin Edward Creaser, Paul John Spencer
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Publication number: 20110114252Abstract: A prepreg for manufacturing a fibre-reinforced composite material, the prepreg comprising a layer of a layer of fibrous reinforcement fully impregnated by a matrix resin material, wherein at least the surface of the resin material has a viscosity and a tack at room temperature, and each prepreg has a stiffness at room temperature, such that when two of the prepregs are disposed as a vertical stack thereof at room temperature with adjacent resin material surfaces, the adjacent resin material surfaces are unadhered and form continuous air paths therebetween.Type: ApplicationFiled: March 27, 2009Publication date: May 19, 2011Applicant: Gurit (UK) Ltd.Inventors: Nicholas Duncan Partington, Paul John Spencer, Daniel Thomas Jones
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Patent number: 6538239Abstract: A magnetic heating device comprising three electrical coils, each coil being wound around a respective magnetic yoke having a gap therein, the three yokes being arranged such that the gaps are adjacent to each other or coincident, an article to be heated being located, in use, in the gaps in the three yokes, so as to direct the magnrtic field generated in each yoke by its respective coil through the articles, each coil being connected to a respective different phase of a three phase low frequency alternating electrical supply, and one of the coils being wound in the opposite direction to the other two coil.Type: GrantFiled: November 12, 1999Date of Patent: March 25, 2003Inventors: Walter James Anderson, Philip Anthony Browning, Barrie Higgins, Paul John Spencer, Brian Kenneth Powell