Abstract: A dry, flowable additive composition for combination with a fertilizer that increases longevity of plant available nitrogen from the fertilizer while in the soil.
Type:
Grant
Filed:
February 28, 2022
Date of Patent:
August 18, 2026
Assignee:
SOILGENIC TECHNOLOGIES, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn, Charles J. Barber, Wei Xu
Abstract: The present invention relates to increasing and/or maintaining nitrogen content in soil by administration of nitrogen sources particles coated with urease inhibitors. In one embodiment, urease inhibitors are dispersed in an improved organo liquid delivery system at concentration levels of 60-95%. In another embodiment, urease inhibitors were applied in a non-aqueous, organo liquid delivery system coating nitrogen sources particles utilizing simple blending equipment at temperatures of 20°-70° C. Another embodiment discloses dry, flowable nitrogen sources coated with a urease inhibitor which can be administered directly to the soil, to a dry natural and/or a manmade fertilizer or to a liquid fertilizer which provides for the reduction of nitrogen loss from the soil. In another embodiment, a composition of urea and <0.2% dimethyl sulfoxide improves the crush resistance of the urea particles.
Type:
Grant
Filed:
February 23, 2022
Date of Patent:
December 16, 2025
Assignee:
SOILGENIC TECHNOLOGIES, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn
Abstract: An improved solvent system for the formulation and application of N-alkyl thiophosphoric triamide urease inhibitors. These formulations provide safety and performance benefits relative to existing alternatives and enable storage, transport and subsequent coating or blending with urea based or organic based fertilizers. These formulations are comprised primarily of environmentally friendly aprotic and protic solvents (particularly dimethyl sulfoxide and alcohols/polyols) to stabilize the urease inhibitor.
Type:
Grant
Filed:
August 17, 2021
Date of Patent:
November 4, 2025
Assignee:
SOILGENIC TECHNOLOGIES, LLC
Inventors:
Gary David McKnight, David Bruce Parker, Yang Zehni, Ray Perkins, Wei Xu
Abstract: Disclosed are compositions and methods of making a liquid fertilizer additive of biodegradable polymeric and/or oligomeric nitrification inhibitors comprised of utilizing a non-aqueous polar, aprotic organo liquid (NAPAOL) as the reaction medium for the reaction of aldehyde(s) with cyano-containing nitrification inhibitors that have one or more aldehyde reactive groups selected from the group consisting of a) primary, b) secondary amines, c) amides, d) thiols, e) hydroxyls and f) phenols.
Type:
Grant
Filed:
December 2, 2021
Date of Patent:
October 21, 2025
Assignee:
SOILGENIC TECHNOLOGIES, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn
Abstract: Disclosed are compositions and methods of making a liquid fertilizer additive solution of polymeric and/or oligomeric heterocyclic nitrogen containing nitrification inhibitors comprising a non-aqueous polar, aprotic organo liquid (NAPAOL) as the reaction medium for the reaction of aldehyde(s) with heterocyclic nitrogen containing nitrification inhibitors that have one or more aldehyde reactive groups selected from the group consisting of a) primary, b) secondary amines, c) amides, d) thiols, e) hydroxyls and f) phenols.
Type:
Grant
Filed:
December 20, 2024
Date of Patent:
October 7, 2025
Assignee:
SOILGENIC TECHNOLOGIES, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn
Abstract: The present invention comprises one or more organic solvents that create a non-aqueous organo solvent delivery system, (NOSDS), and one or more Organo Polycarboxylate functionalities, OPCF, that results in a stable, non-aqueous solution that can easily, safely, evenly and economically coat nitrogen source granules and/or be added to a mobile liquid form of a nitrogen source such as an aqueous dispersion, pressurized ammonia gas or molten urea and/or molten modified urea. Using these solvents provides more flexibility for nitrogen source manufacturers to produce nitrogen sources designed for a particular soil or plant. The liquid solutions are comprised of NOSDS and OPCFs and one or more of a) nitrification inhibitors, b) urease inhibitors, c) pesticides, d) fungicides, e) herbicides, f) insecticides and g) micronutrients.
Type:
Grant
Filed:
January 12, 2024
Date of Patent:
September 16, 2025
Assignee:
Soilgenic Technologies, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn
Abstract: Methods are disclosed for the manufacture of nitrogenous phosphoryl compounds as fluid compositions utilizing a reaction medium comprising one or more aprotic organic liquids that are not reactive with one or more phosphoryl chlorides functional groups and optionally one or more non-aqueous organic liquids as processing aides that result in fluid products for delivering the resulting nitrogenous phosphoryl compounds to the surface of a substrate. Methods are disclosed that eliminate the need for one or more of the following: 1) purifying of one or more nitrogenous phosphoryl compounds, 2) stripping of volatile organic solvents, 3) removal of inorganic by-products, 4) generating solid nitrogenous phosphoryl compounds, 5) packaging one or more solid nitrogenous compounds, and 6) dissolving the solid nitrogenous phosphoryl compounds into a liquid delivery system for application to the surface of a substrate.
Type:
Grant
Filed:
March 15, 2022
Date of Patent:
August 19, 2025
Assignee:
SOILGENIC TECHNOLOGIES, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn
Abstract: An improved solvent system for the formulation and application of N-alkyl thiophosphoric triamide urease inhibitors. These formulations provide safety and performance benefits relative to existing alternatives and enable storage, transport and subsequent coating or blending with urea based or organic based fertilizers. These formulations are comprised primarily of environmentally friendly aprotic and protic solvents (particularly dimethyl sulfoxide and alcohols/polyols) to stabilize the urease inhibitor.
Type:
Grant
Filed:
August 23, 2022
Date of Patent:
July 15, 2025
Assignee:
Soilgenic Technologies, LLC
Inventors:
Gary David McKnight, David Bruce Parker, Yang Zehni, Ray Perkins, Wei Xu
Abstract: The present invention relates to compositions for increasing a nitrogen source life span in plant growth mediums as well as methods of making these compositions. The invention also relates to compositions and methods of reacting a nitrogen source with one or more nitrification inhibitors using standard equipment for producing nitrogen sourced particles.
Type:
Grant
Filed:
January 29, 2024
Date of Patent:
January 14, 2025
Assignee:
Soilgenic Technologies, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn
Abstract: Disclosed are compositions and methods of making a liquid fertilizer additive solution of polymeric and/or oligomeric heterocyclic nitrogen containing nitrification inhibitors comprising a non-aqueous polar, aprotic organo liquid (NAPAOL) as the reaction medium for the reaction of aldehyde(s) with heterocyclic nitrogen containing nitrification inhibitors that have one or more aldehyde reactive groups selected from the group consisting of a) primary, b) secondary amines, c) amides, d) thiols, e) hydroxyls and f) phenols.
Type:
Grant
Filed:
December 29, 2022
Date of Patent:
January 7, 2025
Assignee:
Soilgenic Technologies, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn
Abstract: A composition comprising a) one or more seeds and b) a liquid coating wherein the liquid coating is a non-aqueous liquid formulation, wherein said non-aqueous liquid formulation comprises a) one or more Poly(organic acids) [P(OA)]s, and/or their salts, completely dissolved in b) a Non-aqueous Organo Solvent Delivery System (NOSDS), wherein the NOSDS is a delivery system for adding the one or more [P(OA)]s and/or their salts to the surface of said one or more said seeds.
Type:
Grant
Filed:
November 1, 2023
Date of Patent:
December 24, 2024
Assignee:
Soilgenic Technologies, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn
Abstract: The present invention relates to increasing and/or maintaining nitrogen content in soil by administration of nitrogen sources particles coated with urease inhibitors. In one embodiment, urease inhibitors are dispersed in an improved organo liquid delivery system at concentration levels of 60-95%. In another embodiment, urease inhibitors were applied in a non-aqueous, organo liquid delivery system coating nitrogen sources particles utilizing simple blending equipment at temperatures of 20°-70° C. Another embodiment discloses dry, flowable nitrogen sources coated with a urease inhibitor which can be administered directly to the soil, to a dry natural and/or a manmade fertilizer or to a liquid fertilizer which provides for the reduction of nitrogen loss from the soil. In another embodiment, a composition of urea and <0.2% dimethyl sulfoxide improves the crush resistance of the urea particles.
Type:
Grant
Filed:
April 29, 2019
Date of Patent:
November 12, 2024
Assignee:
SOILGENIC TECHNOLOGIES, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn
Abstract: Increasing longevity of the nitrogen content of soil through improved liquid delivery formulations of nitrification inhibitors. The liquid formulation can also be comprised of nitrification inhibitors and urease inhibitors that are co-dissolved or blended solutions of each These novel formulations are designed to apply to fertilizers, especially urea and manure based fertilizers These delivery formulations provide an environmentally sound and inherently safe solvating system that improves the storage stability of the urease inhibitors by utilizing liquid organic non-water containing solvents, maintain the nitrification inhibitors in solution to storage temperatures of at least 10° C. and provides improved application to fertilizer of nitrification inhibitors.
Type:
Grant
Filed:
March 4, 2021
Date of Patent:
October 15, 2024
Assignee:
SOILGENIC TECHNOLOGIES, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn, Wei Xu, Raymond Patrick Perkins, Zehui Yang, David Parker, Andrew Semple
Abstract: Animal waste contains most of the essential nutrients required for plant growth. However, animal waste also contains microbes that convert urea to ammonium ions, nitrification of the ammonium ions to NO2 and NO3 and denitrification of NO2 or NO3 to N2. N2O is produced as an intermediate of nitrification and denitrification processes and N2O is a 300 times more potent greenhouse gas than CO2. The instant invention discloses low-cost, fluid suspension compositions comprising a combination of urease, nitrification and denitrification inhibitors that decrease the loss of nitrogen from animal waste and lessen the biological formation of the greenhouse gas N2O. These compositions comprise nitrogenous phosphoryl compounds and nitrification inhibitors that utilize manufacturing processes for the formation of low cost, fluid suspensions comprising one or more inhibitor particles selected from the group consisting of urease inhibitor particles, b) nitrification inhibitor particles, and c) fused particles.
Type:
Grant
Filed:
August 15, 2022
Date of Patent:
September 24, 2024
Assignee:
SOILGENIC TECHNOLOGIES, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn
Abstract: In embodiments, the present invention relates to liquid formulations containing hydrophobic, biodegradable polymers disperse within a Non-aqueous Organic Solvent Delivery System (NOSDS) that is designed to coat fertilizer granules with a hydrophobic film utilizing simple application equipment such as mixers, blenders and tumblers. This film can impede the dissolution of fertilizer components by water improving fertilizer efficiency. The NOSDS can be aprotic solvents, protic solvents and mixtures of prone and aprotic solvents which are environmentally friendly, have flashpoints above 145° F. and we inherently rated safe for contact with humans and animals. The hydrophobic polymers an the reaction product of aldehyde(s) and nitrogen containing compounds.
Type:
Grant
Filed:
December 23, 2021
Date of Patent:
August 6, 2024
Assignee:
SOILGENIC TECHNOLOGIES, LLC
Inventors:
Gary David McKnight, Randall Linwood Rayborn, Charles Joseph Barber, Wei Xu