Patents by Inventor John Mark Lawther
John Mark Lawther 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: 20220333037Abstract: The present invention concerns a method of extracting and refining wax from plant material. Briefly, the method comprises the steps of (a) providing plant material comprising cuticular wax, (b) disassociating cuticular wax from the plant material by subjecting said plant material to a dry mechanical treatment and suspending the dry mechanically treated material, or a fraction thereof, in an aqueous solution comprising protease and/or pectinase enzymes, thereby obtaining a sample comprising plant derived cuticular wax and dewaxed plant material in an aqueous suspension, (c) solubilizing the plant derived cuticular wax by increasing the temperature of the sample, (d) separating the suspension into a solid fraction and a liquid fraction comprising melted plant derived cuticular wax, (e) adjusting the pH and temperature of the liquid fraction to pH 5.5 or lower and 50° C.Type: ApplicationFiled: April 30, 2020Publication date: October 20, 2022Inventors: Per Vinther, John Mark Lawther
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Patent number: 11407961Abstract: A method and an plant for separating wax from a dried wax coated plant material, comprising mechanically processing the plant material in a dry process by using an apparatus adapted for deforming at least the outer surface of the plant material, so that the wax coating is cracked and released from the remaining, partly de-waxed, plant material; separating the plant material in a separator into a portion A comprising plant material with a relatively high content of cracked and released wax coating and a relatively low content of the remaining, partly de-waxed, plant material, and a portion B comprising respectively a relatively low content cracked and released wax coating and a relatively high content of the remaining, partly de-waxed, plant material; liquefying the wax contained in portion A, and separating the liquefied wax from the remaining, partly de-waxed, plant material in portion A.Type: GrantFiled: June 18, 2020Date of Patent: August 9, 2022Assignee: JENA TRADING APSInventors: Per Vinther, John Mark Lawther
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Publication number: 20220235291Abstract: The present invention concerns a method of extracting and refining wax from plant material. Briefly, the method comprises the steps of (a) providing plant by material comprising cuticular wax, (b) disassociating cuticular wax from the plant material, thereby obtaining a sample comprising plant derived cuticular wax and dewaxed plant material in an aqueous suspension, (c) solubilizing the plant derived cuticular wax by increasing the temperature of the sample, (d) separating the suspension into a solid fraction and a liquid fraction comprising melted plant derived cuticular wax, (e) mixing the liquid fraction with a capturing agent, wherein the capturing agent has a boiling point above 85° C. at ambient pressure, (f) separating the mixture into an aqueous fraction and a capture fraction comprising capturing agent and plant derived cuticular wax, (g) recovering the plant derived cuticular wax from the capture fraction.Type: ApplicationFiled: April 30, 2020Publication date: July 28, 2022Inventors: Per Vinther, John Mark Lawther
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Publication number: 20220081833Abstract: The present invention provides a method of producing an improved cellulose pulp consisting of cellulose fibers of a desired length, such as cellulose fibers having a length-weighted average fiber length Lc(l)>0.6 mm and its use in cellulose pulp-comprising products, such as packaging material with improved properties.Type: ApplicationFiled: January 21, 2020Publication date: March 17, 2022Inventors: Per VINTHER, John Mark LAWTHER
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Publication number: 20210403828Abstract: The invention concerns plant wax extracts and a method for extracting wax from plants, such as agricultural biowaste and in particular from cereal straw, including a first dry mechanical treatment step to separate a wax enriched fraction from a straw fraction low in wax and a second wet step including enzymatic treatment of the wax enriched fraction.Type: ApplicationFiled: June 9, 2021Publication date: December 30, 2021Inventors: Per Vinther, John Mark Lawther
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Publication number: 20200318031Abstract: A method and an plant for separating wax from a dried wax coated plant material, comprising mechanically processing the plant material in a dry process by using an apparatus adapted for deforming at least the outer surface of the plant material, so that the wax coating is cracked and released from the remaining, partly de-waxed, plant material; separating the plant material in a separator into a portion A comprising plant material with a relatively high content of cracked and released wax coating and a relatively low content of the remaining, partly de-waxed, plant material, and a portion B comprising respectively a relatively low content cracked and released wax coating and a relatively high content of the remaining, partly de-waxed, plant material; liquefying the wax contained in portion A, and separating the liquefied wax from the remaining, partly de-waxed, plant material in portion A.Type: ApplicationFiled: June 18, 2020Publication date: October 8, 2020Inventors: Per Vinther, John Mark LAWTHER
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Patent number: 10723972Abstract: A method and an plant for separating wax from a dried wax coated plant material, comprising mechanically processing the plant material in a dry process by using an apparatus adapted for deforming at least the outer surface of the plant material, so that the wax coating is cracked and released from the remaining, partly de-waxed, plant material; separating the plant material in a separator into a portion A comprising plant material with a relatively high content of cracked and released wax coating and a relatively low content of the remaining, partly de-waxed, plant material, and a portion B comprising respectively a relatively low content cracked and released wax coating and a relatively high content of the remaining, partly de-waxed, plant material; liquefying the wax contained in portion A, and separating the liquefied wax from the remaining, partly de-waxed, plant material in portion A.Type: GrantFiled: June 4, 2015Date of Patent: July 28, 2020Assignee: JENA TRADING APSInventors: Per Vinther, John Mark Lawther
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Publication number: 20170253831Abstract: The invention concerns plant wax extracts and a method for extracting wax from plants, such as agricultural biowaste and in particular from cereal straw, including a first dry mechanical treatment step to separate a wax enriched fraction from a straw fraction low in wax and a second wet step including enzymatic treatment of the wax enriched fraction.Type: ApplicationFiled: June 4, 2015Publication date: September 7, 2017Inventors: Per Vinther, John Mark Lawther
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Publication number: 20170107451Abstract: A method and an plant for separating wax from a dried wax coated plant material, comprising mechanically processing the plant material in a dry process by using an apparatus adapted for deforming at least the outer surface of the plant material, so that the wax coating is cracked and released from the remaining, partly de-waxed, plant material; separating the plant material in a separator into a portion A comprising plant material with a relatively high content of cracked and released wax coating and a relatively low content of the remaining, partly de-waxed, plant material, and a portion B comprising respectively a relatively low content cracked and released wax coating and a relatively high content of the remaining, partly de-waxed, plant material; liquefying the wax contained in portion A, and separating the liquefied wax from the remaining, partly de-waxed, plant material in portion A.Type: ApplicationFiled: June 4, 2015Publication date: April 20, 2017Applicant: JENA TRADING APSInventors: Per Vinther, John Mark Lawther
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Patent number: 9458366Abstract: The present invention relates to a liquid adhesive composition comprising a partly hydrolyzed protein component, having a degree of hydrolysis (DH) in the range 0.2-2; a metal silicate component; optionally, an exogenic protein hydrolyzing component; and wherein the liquid adhesive composition has a solid content in the range 15-80% by weight.Type: GrantFiled: December 21, 2012Date of Patent: October 4, 2016Assignee: Bollerup Jensen A/SInventors: Mette Bjerregaard Blomgreen, Michael Østerby, John Mark Lawther
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Publication number: 20140363614Abstract: The present invention relates to a liquid adhesive composition comprising a partly hydrolyzed protein component, having a degree of hydrolysis (DH) in the range 0.2-2; a metal silicate component; optionally, an exogenic protein hydrolyzing component; and wherein the liquid adhesive composition has a solid content in the range 15-80% by weight.Type: ApplicationFiled: December 21, 2012Publication date: December 11, 2014Inventors: Mette Bjerregaard Blomgreen, Michael Østerby, John Mark Lawther
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Patent number: 7910143Abstract: The present invention relates to a process for the extraction of soluble dietary fiber from oat and barley grains using enzymatic hydrolysis treatment, wherein the grain is milled and any endosperm depleted fractions thereof being rich in B-glucans are recombined, without further heat treatment, dispersed in water and then subjected to sequential enzymatic treatment with starch degrading enzymes, followed by an optional step of enzyme inactivation by wet heat treatment, and a subsequent step wherein the hydrolysate mixture is spontaneously or centrifugally separated into at least 3 distinct fractions: a first fraction, which comprises the soluble dietary fiber complex, containing more than 20% B-glucan on a dry matter basis, a second aqueous fraction, and a third fraction comprising most of the protein and oil together with the insoluble fibrous material from the milled grain.Type: GrantFiled: May 24, 2006Date of Patent: March 22, 2011Assignee: Biovelop International B.V.Inventors: Sten Kvist, John Mark Lawther
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Patent number: 7858139Abstract: The present invention relates to a process for preparing a stable emulsion/dispersion of an oil and an aqueous phase, wherein a ?-glucans rich substrate, derived from oat or barley grain, is the active emulsifying component.Type: GrantFiled: December 11, 2006Date of Patent: December 28, 2010Assignee: Biovelop ABInventors: Sten Kvist, John Mark Lawther
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Patent number: 7709033Abstract: A process for the fractionation of valuable fractions from cereal brans (e.g. wheat, barley and oat brans, and rice polish) is described. In particular, this invention describes a two step process, in which the said bran is first subjected to a combination of enzymatic treatment and wet milling, followed by sequential centrifugation and ultrafiltration, which aims at physically separating the main bran factions, i.e. insoluble phase (pericarp and aleurone layer), germ-rich fraction, residual endosperm fraction and soluble sugars. A second step consists of fractionating cereal brans substantially free of soluble compounds, hence insoluble phase from the above-mentioned first step, by enzymatic treatment with xylanases and/or beta-glucanase and wet milling, followed by sequential centrifugation and ultrafiltration, which aims at physically separating the main fractions, i.e.Type: GrantFiled: August 19, 2003Date of Patent: May 4, 2010Assignee: Biovelop International B.V.Inventors: Sten Kvist, Tommie Carlsson, John Mark Lawther, Fernando Bastile DeCastro
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Patent number: 7413662Abstract: A modified sorptive lignocellulosic fibre material with hydroxyl groups on the lignocellulosic fibres doubly modified by esterification with a combination of monocarboxylic and dicarboxylic acid ester groups. A process for the preparation of the sorptive material. The sorptive fibre material is effective for the removal of oils and other contaminants including heavy metals from a fluid such as contaminated water by a combined sorption of hydrophobic contaminants and ion exchange.Type: GrantFiled: December 20, 2005Date of Patent: August 19, 2008Assignee: Danish Plant Fibre Technologies Holding A/SInventors: Per Berre Eriksen, John Mark Lawther, Peter Larsen
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Publication number: 20080017581Abstract: A modified sorptive lignocellulosic fibre material with hydroxyl groups on the lignocellulosic fibres doubly modified by esterification with a combination of monocarboxylic and dicarboxylic acid ester groups. A process for the preparation of the sorptive material. The sorptive fibre material is effective for the removal of oils and other contaminants including heavy metals from a fluid such as contaminated water by a combined sorption of hydrophobic contaminants and ion exchange.Type: ApplicationFiled: December 20, 2005Publication date: January 24, 2008Applicant: Danish Plant Fiber Technologies Holding A/SInventors: Per Berre Eriksen, John Mark Lawther, Peter Larsen
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Publication number: 20030146164Abstract: A material for absorbing hydrophobic water-immiscible liquids comprises lignocellulosic plant material which has been rendered relatively more absorbent to hydrophobic water-immiscible liquids by esterification of hydroxyl groups in the lignin of the lignocellulose material. The esterification in one aspect is by acetylation of the hydroxyl groups. Absorbing articles and methods for use with hydrophobic water-immiscible liquids are also disclosed.Type: ApplicationFiled: June 16, 1997Publication date: August 7, 2003Inventors: DAVID J. ROBSON, JOHN MARK LAWTHER, SARA A. HUGHES