Patents by Inventor Terje Tande
Terje Tande 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).
-
Publication number: 20230322643Abstract: The present disclosure is related to a conditioning agent for reducing water absorption and dust formation of a particulate fertilizer, comprising 50 to 60 weight % of wax, 30 to 40 weight % of oil, 1 to 15 weight % of a resin being oil-soluble and miscible with wax and oil, and optionally 0.01 to 2.0 weight % of a viscoelastic elastomer which is soluble in oil. The conditioning agent may be applied to a particulate substrate, in particular a fertilizer particulate substrate, to reduce the moisture uptake and the dust formation of the substrate, in particular wherein the substrate is blended with other particulate compositions.Type: ApplicationFiled: August 23, 2021Publication date: October 12, 2023Inventors: Vajiheh NAFISI, Terje TANDE
-
Patent number: 11034626Abstract: The present disclosure provides robust fertilizer particles suitable for fertigation. A composition comprising mineral oil, primary alkylamines and water-insoluble particles may coat fertilizer particles and make them suitable for fertigation. Furthermore, the coated particles display reduced dusting tendency. The coating composition may be applied as a thin, single, continuous layer covering the particle core. The coating may avoid surface film problems when the particles are dissolved in water, even if the very hydrophobic mineral oil is less dense than water. It may be counterintuitive to include water-insoluble particles in a fertilizer particle for fertigation, however the claimed particles may be dissolved to make a fertigation solution that avoid problems in tanks, nozzles and piping of the fertigation systems.Type: GrantFiled: November 30, 2017Date of Patent: June 15, 2021Assignee: YARA INTERNATIONAL ASAInventors: Petrus Cornelis Maria Mutsaers, Terje Tande
-
Publication number: 20190276375Abstract: The present disclosure provides robust fertilizer particles suitable for fertigation. A composition comprising mineral oil, primary alkylamines and water-insoluble particles may coat fertilizer particles and make them suitable for fertigation. Furthermore, the coated particles display reduced dusting tendency. The coating composition may be applied as a thin, single, continuous layer covering the particle core. The coating may avoid surface film problems when the particles are dissolved in water, even if the very hydrophobic mineral oil is less dense than water. It may be counterintuitive to include water-insoluble particles in a fertilizer particle for fertigation, however the claimed particles may be dissolved to make a fertigation solution that avoid problems in tanks, nozzles and piping of the fertigation systems.Type: ApplicationFiled: November 30, 2017Publication date: September 12, 2019Applicant: YARA INTERNATIONAL ASAInventors: Petrus Cornelis, Maria MUTSAERS, Terje TANDE
-
Patent number: 10294170Abstract: The invention relates to a conditioning agent for reducing water absorption and dust formation of a particulate fertilizer, comprising 10 to 50 weight % of wax, 40 to 90 weight % of mineral oil and 1 to 15 weight % of a resin being mineral oil-soluble and miscible with wax and mineral oil, wherein the agent further comprises 0.1 to 1 weight % of a viscoelastic elastomer selected from the group of polyisobutylene and styrene-isoprene-styrene block copolymer which is soluble in mineral oil and has an average molecular weight of 30.000 to 5.000.000. The invention further relates to a particulate fertilizer composition, preferably a urea-ammonium sulfate (UAS) fertilizer, a urea fertilizer or a calcium nitrate fertilizer, comprising a particulate substrate, preferably an hygroscopic fertilizer, preferably a nitrogen-containing fertilizer, and 0.05 to 2 weight % of said coating thereon for reducing moisture uptake and dust formation of said fertilizer.Type: GrantFiled: November 25, 2015Date of Patent: May 21, 2019Assignee: YARA INTERNATIONAL ASAInventors: Torstein Obrestad, Terje Tande
-
Patent number: 10118867Abstract: A single-step method for preparing a free-flowing, non-dusting micronutrient-coated particulate solid fertiliser material, the method comprising applying a single fluid onto particulate solid fertiliser material at ambient temperature without chemical reaction or chelation, said single fluid comprising a suspension of one or more micronutrient materials in an oil.Type: GrantFiled: March 14, 2018Date of Patent: November 6, 2018Assignee: Yara UK LimitedInventors: Stuart Charles Ward, Victoria Anne Butler, Torstein Obrestad, Terje Tande
-
Publication number: 20180201548Abstract: A single-step method for preparing a free-flowing, non-dusting micronutrient-coated particulate solid fertiliser material, the method comprising applying a single fluid onto particulate solid fertiliser material at ambient temperature without chemical reaction or chelation, said single fluid comprising a suspension of one or more micronutrient materials in an oil.Type: ApplicationFiled: March 14, 2018Publication date: July 19, 2018Inventors: Stuart Charles Ward, Victoria Anne Butler, Torstein Obrestad, Terje Tande
-
Patent number: 10017428Abstract: The present invention relates to a solid, particulate, non-explosive composition comprising ammonium nitrate-based particles, in particular a fertilizer composition, of which, on the one hand, the potential misuse as a precursor for an explosive composition is limited without, on the other hand, hampering its legitimate use by farmers for food production. The solid, particulate, non-explosive composition further comprises a gelling agent which is able to form a substantially water-insoluble and non-filterable hydrogel after the solid fertilizer composition is contacted with water. The gelling agent is selected from the group of gum-based gelling agents, in particular xanthan gum-based agents and guar gum-based agents, most preferably is a xanthan gum-based agent.Type: GrantFiled: July 14, 2015Date of Patent: July 10, 2018Assignee: YARA INTERNATIONAL ASAInventors: Terje Tande, Francois Ledoux
-
Patent number: 9994492Abstract: A single-step method for preparing a free-flowing, non-dusting micronutrient-coated particulate solid fertilizer material, the method comprising applying a single fluid onto particulate solid fertiliser material at ambient temperature without chemical reaction or chelation, said single fluid comprising a suspension of one or more micronutrient materials in an oil.Type: GrantFiled: February 20, 2014Date of Patent: June 12, 2018Assignee: Yara UK LimitedInventors: Stuart Charles Ward, Victoria Anne Butler, Torstein Obrestad, Terje Tande
-
Publication number: 20170283339Abstract: The invention relates to a conditioning agent for reducing water absorption and dust formation of a particulate fertilizer, comprising 10 to 50 weight % of wax, 40 to 90 weight % of mineral oil and 1 to 15 weight % of a resin being mineral oil-soluble and miscible with wax and mineral oil, wherein the agent further comprises 0.1 to 1 weight % of a viscoelastic elastomer selected from the group of polyisobutylene and styrene-isoprene-styrene block copolymer which is soluble in mineral oil and has an average molecular weight of 30.000 to 5.000.000. The invention further relates to a particulate fertilizer composition, preferably a urea-ammonium sulfate (UAS) fertilizer, a urea fertilizer or a calcium nitrate fertilizer, comprising a particulate substrate, preferably an hygroscopic fertilizer, preferably a nitrogen-containing fertilizer, and 0.05 to 2 weight % of said coating thereon for reducing moisture uptake and dust formation of said fertilizer.Type: ApplicationFiled: November 25, 2015Publication date: October 5, 2017Applicant: YARA INTERNATIONAL ASAInventors: Torstein OBRESTAD, Terje TANDE
-
Publication number: 20170166489Abstract: The present invention relates to a solid, particulate, non-explosive composition comprising ammonium nitrate-based particles, in particular a fertilizer composition, of which, on the one hand, the potential misuse as a precursor for an explosive composition is limited without, on the other hand, hampering its legitimate use by farmers for food production. The solid, particulate, non-explosive composition further comprises a gelling agent which is able to form a substantially water-insoluble and non-filterable hydrogel after the solid fertilizer composition is contacted with water. The gelling agent is selected from the group of gum-based gelling agents, in particular xanthan gum-based agents and guar gum-based agents, most preferably is a xanthan gum-based agent.Type: ApplicationFiled: July 14, 2015Publication date: June 15, 2017Applicant: YARA INTERNATIONAL ASAInventors: Terje TANDE, Francois LEDOUX
-
Publication number: 20150376076Abstract: A single-step method for preparing a free-flowing, non-dusting micronutrient-coated particulate solid fertiliser material, the method comprising applying a single fluid onto particulate solid fertiliser material at ambient temperature without chemical reaction or chelation, said single fluid comprising a suspension of one or more micronutrient materials in an oil.Type: ApplicationFiled: February 20, 2014Publication date: December 31, 2015Applicant: YARA UK LIMITEDInventors: Stuart Charles Ward, Victoria Anne Butler, Torstein Obrestad, Terje Tande