Patents by Inventor Christopher J. Janke
Christopher J. Janke 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: 20230125924Abstract: A method of capturing carbon dioxide (CO2) present in air is provided. The method includes adding a carbon-dioxide-capturing device to a heating, ventilation, and air conditioning (HVAC) system of a building. The carbon-dioxide-capturing device is added to one or both of an air handler and air-distribution ductwork of the HVAC system. The method further includes circulating air including carbon dioxide through the carbon-dioxide-capturing device in the HVAC system. A direct decarbonization system for capturing carbon dioxide present in air is also provided. The system includes an HVAC unit, air-distribution ductwork connected to the HVAC unit, and a carbon-dioxide-capturing device disposed in one or both of the HVAC unit and the air-distribution ductwork. Carbon dioxide gas present in air passing through the HVAC unit or the air-distribution ductwork is removable from the air by the carbon-dioxide-capturing device.Type: ApplicationFiled: October 26, 2022Publication date: April 27, 2023Inventors: Kashif Nawaz, Brian A. Fricke, Xin Sun, Scott Sluder, Constantinos Tsouris, Michelle K. Kidder, Christopher J. Janke, Kai Li, Joshua A. Thompson
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Patent number: 11247191Abstract: A method of producing a functionalized material that extracts metal ions from solution, the method comprising: (i) providing a precursor material having nitrile groups appended to its surface; and (ii) reacting said nitrile groups with hydroxylamine or a derivative thereof in the presence of a polar aprotic solvent at a temperature of 60-80° C. for at least 1 hour, to convert at least a portion of said nitrile groups to amidoxime and imide dioxime groups, followed by reaction with a base capable of hydrolyzing any remaining nitrile groups to carboxylic acid groups; wherein said functionalized material has a higher uranium absorption capacity than a functionalized material produced under same conditions except that the nitrile groups are reacted with hydroxylamine in only a protic solvent. The invention is also directed to functionalized materials produced by the above-described method, and methods for using the functionalized material for extracting metal ions from metal-containing solutions.Type: GrantFiled: June 8, 2020Date of Patent: February 15, 2022Assignee: UT-Battelle, LLCInventors: Christopher J. Janke, Richard T. Mayes, Sadananda Das, Sheng Dai
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Publication number: 20200306724Abstract: A method of producing a functionalized material that extracts metal ions from solution, the method comprising: (i) providing a precursor material having nitrile groups appended to its surface; and (ii) reacting said nitrile groups with hydroxylamine or a derivative thereof in the presence of a polar aprotic solvent at a temperature of 60-80° C. for at least 1 hour, to convert at least a portion of said nitrile groups to amidoxime and imide dioxime groups, followed by reaction with a base capable of hydrolyzing any remaining nitrile groups to carboxylic acid groups; wherein said functionalized material has a higher uranium absorption capacity than a functionalized material produced under same conditions except that the nitrile groups are reacted with hydroxylamine in only a protic solvent. The invention is also directed to functionalized materials produced by the above-described method, and methods for using the functionalized material for extracting metal ions from metal-containing solutions.Type: ApplicationFiled: June 8, 2020Publication date: October 1, 2020Applicant: UT-Battelle, LLCInventors: Christopher J. JANKE, Richard T. MAYES, Sadananda DAS, Sheng DAI
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Patent number: 10702852Abstract: A method of producing a functionalized material that extracts metal ions from solution, the method comprising: (i) providing a precursor material having nitrile groups appended to its surface; and (ii) reacting said nitrile groups with hydroxylamine or a derivative thereof in the presence of a polar aprotic solvent at a temperature of 60-80° C. for at least 1 hour, to convert at least a portion of said nitrile groups to amidoxime and imide dioxime groups, followed by reaction with a base capable of hydrolyzing any remaining nitrile groups to carboxylic acid groups; wherein said functionalized material has a higher uranium absorption capacity than a functionalized material produced under same conditions except that the nitrile groups are reacted with hydroxylamine in only a protic solvent. The invention is also directed to functionalized materials produced by the above-described method, and methods for using the functionalized material for extracting metal ions from metal-containing solutions.Type: GrantFiled: June 16, 2017Date of Patent: July 7, 2020Assignee: UT-Battelle, LLCInventors: Christopher J. Janke, Richard T. Mayes, Sadananda Das, Sheng Dai
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Publication number: 20170361304Abstract: A method of producing a functionalized material that extracts metal ions from solution, the method comprising: (i) providing a precursor material having nitrile groups appended to its surface; and (ii) reacting said nitrile groups with hydroxylamine or a derivative thereof in the presence of a polar aprotic solvent at a temperature of 60-80° C. for at least 1 hour, to convert at least a portion of said nitrile groups to amidoxime and imide dioxime groups, followed by reaction with a base capable of hydrolyzing any remaining nitrile groups to carboxylic acid groups; wherein said functionalized material has a higher uranium absorption capacity than a functionalized material produced under same conditions except that the nitrile groups are reacted with hydroxylamine in only a protic solvent. The invention is also directed to functionalized materials produced by the above-described method, and methods for using the functionalized material for extracting metal ions from metal-containing solutions.Type: ApplicationFiled: June 16, 2017Publication date: December 21, 2017Inventors: Christopher J. JANKE, Richard T. MAYES, Sadananda DAS, Sheng DAI
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Patent number: 9433920Abstract: A fiber-based adsorbent and a related method of manufacture are provided. The fiber-based adsorbent includes polymer fibers with grafted side chains and an increased surface area per unit weight over known fibers to increase the adsorption of dissolved metals, for example uranium, from aqueous solutions. The polymer fibers include a circular morphology in some embodiments, having a mean diameter of less than 15 microns, optionally less than about 1 micron. In other embodiments, the polymer fibers include a non-circular morphology, optionally defining multiple gear-shaped, winged-shaped or lobe-shaped projections along the length of the polymer fibers. A method for forming the fiber-based adsorbents includes irradiating high surface area polymer fibers, grafting with polymerizable reactive monomers, reacting the grafted fibers with hydroxylamine, and conditioning with an alkaline solution.Type: GrantFiled: March 27, 2014Date of Patent: September 6, 2016Assignee: UT-Battelle, LLCInventors: Christopher J. Janke, Sheng Dai, Yatsandra Oyola
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Patent number: 9327267Abstract: A powder-based adsorbent and a related method of manufacture are provided. The powder-based adsorbent includes polymer powder with grafted side chains and an increased surface area per unit weight to increase the adsorption of dissolved metals, for example uranium, from aqueous solutions. A method for forming the powder-based adsorbent includes irradiating polymer powder, grafting with polymerizable reactive monomers, reacting with hydroxylamine, and conditioning with an alkaline solution. Powder-based adsorbents formed according to the present method demonstrated a significantly improved uranium adsorption capacity per unit weight over existing adsorbents.Type: GrantFiled: April 28, 2015Date of Patent: May 3, 2016Assignee: UT-Battelle, LLCInventors: Christopher J. Janke, Sheng Dai, Yatsandra Oyola
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Publication number: 20150231601Abstract: A powder-based adsorbent and a related method of manufacture are provided. The powder-based adsorbent includes polymer powder with grafted side chains and an increased surface area per unit weight to increase the adsorption of dissolved metals, for example uranium, from aqueous solutions. A method for forming the powder-based adsorbent includes irradiating polymer powder, grafting with polymerizable reactive monomers, reacting with hydroxylamine, and conditioning with an alkaline solution. Powder-based adsorbents formed according to the present method demonstrated a significantly improved uranium adsorption capacity per unit weight over existing adsorbents.Type: ApplicationFiled: April 28, 2015Publication date: August 20, 2015Inventors: Christopher J. Janke, Sheng Dai, Yatsandra Oyola
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Patent number: 9044739Abstract: Foam-based adsorbents and a related method of manufacture are provided. The foam-based adsorbents include polymer foam with grafted side chains and an increased surface area per unit weight to increase the adsorption of dissolved metals, for example uranium, from aqueous solutions. A method for forming the foam-based adsorbents includes irradiating polymer foam, grafting with polymerizable reactive monomers, reacting with hydroxylamine, and conditioning with an alkaline solution. Foam-based adsorbents formed according to the present method demonstrated a significantly improved uranium adsorption capacity per unit weight over existing adsorbents.Type: GrantFiled: March 27, 2014Date of Patent: June 2, 2015Assignee: UT-Battelle, LLCInventors: Christopher J. Janke, Sheng Dai, Yatsandra Oyola
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Publication number: 20140225051Abstract: Disclosed herein is a flame retardant composition comprising sulfonated polyolefin and a SO2-scavenging material and/or a flame retardant material that is not a sulfonated polyolefin. Also disclosed is a flame-resistant composite comprising a host material in which is incorporated sulfonated polyolefin as a flame retardant composition. Further disclosed are methods for producing the flame retardant composition and flame-resistant composites.Type: ApplicationFiled: February 7, 2014Publication date: August 14, 2014Applicant: UT-Battelle, LLCInventors: Amit K. Naskar, Felix L. Paulauskas, Charles David Warren, Christopher J. Janke
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Publication number: 20140206782Abstract: Foam-based and powder-based adsorbents and a related method of manufacture are provided. The foam-based and powder-based adsorbents includes polymer foam or powder with grafted side chains and an increased surface area per unit weight to increase the adsorption of dissolved metals, for example uranium, from aqueous solutions. A method for forming the foam-based or powder-based adsorbents includes irradiating polymer foam or powder, grafting with polymerizable reactive monomers, reacting with hydroxylamine, and conditioning with an alkaline solution. Foam-based and powder-based adsorbents formed according to the present method demonstrated a significantly improved uranium adsorption capacity per unit weight over existing adsorbents.Type: ApplicationFiled: March 27, 2014Publication date: July 24, 2014Inventors: Christopher J. Janke, Sheng Dai, Yatsandra Oyola
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Publication number: 20140206532Abstract: A fiber-based adsorbent and a related method of manufacture are provided. The fiber-based adsorbent includes polymer fibers with grafted side chains and an increased surface area per unit weight over known fibers to increase the adsorption of dissolved metals, for example uranium, from aqueous solutions. The polymer fibers include a circular morphology in some embodiments, having a mean diameter of less than 15 microns, optionally less than about 1 micron. In other embodiments, the polymer fibers include a non-circular morphology, optionally defining multiple gear-shaped, winged-shaped or lobe-shaped projections along the length of the polymer fibers. A method for forming the fiber-based adsorbents includes irradiating high surface area polymer fibers, grafting with polymerizable reactive monomers, reacting the grafted fibers with hydroxylamine, and conditioning with an alkaline solution.Type: ApplicationFiled: March 27, 2014Publication date: July 24, 2014Inventors: Christopher J. Janke, Sheng Dai, Yatsandra Oyola
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Patent number: 8722757Abstract: A fiber-based adsorbent and a related method of manufacture are provided. The fiber-based adsorbent includes polymer fibers with grafted side chains and an increased surface area per unit weight over known fibers to increase the adsorption of dissolved metals, for example uranium, from aqueous solutions. The polymer fibers include a circular morphology in some embodiments, having a mean diameter of less than 15 microns, optionally less than about 1 micron. In other embodiments, the polymer fibers include a non-circular morphology, optionally defining multiple gear-shaped, winged-shaped or lobe-shaped projections along the length of the polymer fibers. A method for forming the fiber-based adsorbents includes irradiating high surface area polymer fibers, grafting with polymerizable reactive monomers, reacting the grafted fibers with hydroxylamine, and conditioning with an alkaline solution.Type: GrantFiled: July 19, 2012Date of Patent: May 13, 2014Assignee: UT-Battelle, LLCInventors: Christopher J. Janke, Sheng Dai, Yatsandra Oyola
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Publication number: 20130071659Abstract: A fiber-based adsorbent and a related method of manufacture are provided. The fiber-based adsorbent includes polymer fibers with grafted side chains and an increased surface area per unit weight over known fibers to increase the adsorption of dissolved metals, for example uranium, from aqueous solutions. The polymer fibers include a circular morphology in some embodiments, having a mean diameter of less than 15 microns, optionally less than about 1 micron. In other embodiments, the polymer fibers include a non-circular morphology, optionally defining multiple gear-shaped, winged-shaped or lobe-shaped projections along the length of the polymer fibers. A method for forming the fiber-based adsorbents includes irradiating high surface area polymer fibers, grafting with polymerizable reactive monomers, reacting the grafted fibers with hydroxylamine, and conditioning with an alkaline solution.Type: ApplicationFiled: July 19, 2012Publication date: March 21, 2013Applicant: UT-BATTELLE, LLCInventors: Christopher J. Janke, Sheng Dai, Yatsandra Oyola
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Patent number: 6107008Abstract: An object comprised of a curable material and formed by stereolithography or another three-dimensional prototyping method, in which the object has undergone initial curing, is subjected to post-curing by ionizing radiation, such as an electron beam having a predetermined beam output energy, which is applied in a predetermined dosage and at a predetermined dose rate. The post-cured object exhibits a property profile which is superior to that which existed prior to the ionizing radiation post-curing.Type: GrantFiled: August 29, 1997Date of Patent: August 22, 2000Assignees: Lockheed Martin Energy Research, Lockheed Martin Energy Systems, Inc.Inventors: David H. Howell, Claude C. Eberle, Christopher J. Janke
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Patent number: 5877229Abstract: A mixture of epoxy resins such as a semi-solid triglycidyl ether of tris (hydroxyphenyl) methane and a low viscosity bisphenol A glycidyl ether and a cationic photoinitiator such as a diaryliodonium salt is cured by irradiating with a dosage of electron beams from about 50 to about 150 kGy, forming a cross-linked epoxy resin polymer.Type: GrantFiled: July 26, 1995Date of Patent: March 2, 1999Assignee: Lockheed Martin Energy Systems, Inc.Inventors: Christopher J. Janke, Vincent J. Lopata, Stephen J. Havens, George F. Dorsey, Richard J. Moulton
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Patent number: 5726216Abstract: Mixtures of epoxy resins with cationic initiators are curable under high energy ionizing radiation such as electron beam radiation, X-ray radiation, and gamma radiation. The composition of this process consists of an epoxy resin, a cationic initiator such as a diaryliodonium or triarylsulfonium salt of specific anions, and a toughening agent such as a thermoplastic, hydroxy-containing thermoplastic oligomer, epoxy-containing thermoplastic oligomer, reactive flexibilizer, rubber, elastomer, or mixture thereof. Cured compositions have high glass transition temperatures, good mechanical properties, and good toughness. These properties are comparable to those of similar thermally cured epoxies.Type: GrantFiled: July 8, 1996Date of Patent: March 10, 1998Assignee: Lockheed Martin Energy Systems, Inc.Inventors: Christopher J. Janke, George F. Dorsey, Stephen J. Havens, Vincent J. Lopata