Patents by Inventor Nachiketa Anand
Nachiketa Anand 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: 20230416088Abstract: A method may include: contacting a feed stream comprising carbonyl sulfide with an aqueous stream comprising water in the presence of a carbonyl sulfide hydrolysis catalyst, wherein the carbonyl sulfide hydrolysis catalyst comprises a solid support and a polyamine covalently bonded to the solid support; and hydrolyzing at least a portion of the carbonyl sulfide to produce at least hydrogen sulfide.Type: ApplicationFiled: June 28, 2022Publication date: December 28, 2023Applicant: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand, Jeff Gomach
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Publication number: 20230416420Abstract: An apparatus may include: a flow path defined by a conduit; and a functional polymer disposed in the conduit, wherein the functional polymer comprises a polymer and a macrocycle, wherein the macrocycle is grafted to the polymer by an amide bond formed between the macrocycle and the polymer.Type: ApplicationFiled: June 28, 2022Publication date: December 28, 2023Applicant: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Patent number: 11826741Abstract: A method of producing a catalytic carbon fiber may include: oxidizing a virgin carbon fiber to produce an oxidized carbon fiber; reacting the oxidized carbon fiber with a polyamine compound to produce an amine modified carbon fiber; and reacting the amine modified carbon fiber with an organometallic macrocycle to produce the catalytic carbon fiber.Type: GrantFiled: November 10, 2022Date of Patent: November 28, 2023Assignee: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Patent number: 11826736Abstract: A method of producing a catalytic carbon fiber may include: providing a carbon fiber and an aminated macrocycle, mixing the carbon fiber and the aminated macrocycle with a solvent; and reacting the carbon fiber and the aminated macrocycle to form an amide bond between the carbon fiber and the aminated macrocycle thereby forming the catalytic carbon fiber.Type: GrantFiled: November 29, 2021Date of Patent: November 28, 2023Assignee: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Publication number: 20230166243Abstract: A method of producing a catalytic carbon fiber may include: providing a carbon fiber and an aminated macrocycle, mixing the carbon fiber and the aminated macrocycle with a solvent; and reacting the carbon fiber and the aminated macrocycle to form an amide bond between the carbon fiber and the aminated macrocycle thereby forming the catalytic carbon fiber.Type: ApplicationFiled: November 29, 2021Publication date: June 1, 2023Applicant: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Publication number: 20230086959Abstract: A method of producing a catalytic carbon fiber may include: oxidizing a virgin carbon fiber to produce an oxidized carbon fiber; reacting the oxidized carbon fiber with a polyamine compound to produce an amine modified carbon fiber; and reacting the amine modified carbon fiber with an organometallic macrocycle to produce the catalytic carbon fiber.Type: ApplicationFiled: November 10, 2022Publication date: March 23, 2023Applicant: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Patent number: 11524283Abstract: A method of producing a catalytic carbon fiber may include: oxidizing a virgin carbon fiber to produce an oxidized carbon fiber; reacting the oxidized carbon fiber with a polyamine compound to produce an amine modified carbon fiber; and reacting the amine modified carbon fiber with an organometallic macrocycle to produce the catalytic carbon fiber.Type: GrantFiled: December 21, 2020Date of Patent: December 13, 2022Assignee: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Patent number: 11517889Abstract: A fiber bundle contactor may include: a flow path defined by a conduit; a catalytic carbon fiber bundle disposed in the conduit; and an inlet allowing fluid flow into the flow path. A method may include: introducing into vessel a hydrocarbon comprising mercaptan sulfur, an aqueous caustic solution, and an oxidizer; reacting at least a portion of the mercaptan sulfur and the aqueous caustic solution to produce a mercaptide; and reacting the mercaptide and the oxidizer in the presence of a catalytic carbon fiber bundle to produce a disulfide oil.Type: GrantFiled: December 21, 2020Date of Patent: December 6, 2022Assignee: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Publication number: 20220193647Abstract: A fiber bundle contactor may include: a flow path defined by a conduit; a catalytic carbon fiber bundle disposed in the conduit; and an inlet allowing fluid flow into the flow path. A method may include: introducing into vessel a hydrocarbon comprising mercaptan sulfur, an aqueous caustic solution, and an oxidizer; reacting at least a portion of the mercaptan sulfur and the aqueous caustic solution to produce a mercaptide; and reacting the mercaptide and the oxidizer in the presence of a catalytic carbon fiber bundle to produce a disulfide oil.Type: ApplicationFiled: December 21, 2020Publication date: June 23, 2022Applicant: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Publication number: 20220193646Abstract: A method of producing a catalytic carbon fiber may include: oxidizing a virgin carbon fiber to produce an oxidized carbon fiber; reacting the oxidized carbon fiber with a polyamine compound to produce an amine modified carbon fiber; and reacting the amine modified carbon fiber with an organometallic macrocycle to produce the catalytic carbon fiber.Type: ApplicationFiled: December 21, 2020Publication date: June 23, 2022Applicant: Merichem CompanyInventors: Zhouyang Liu, Nachiketa Anand
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Patent number: 8574429Abstract: A one-step process for desulfurizing an oxidized sulfone-containing fuel stream, such as a diesel stream, is disclosed where mass transfer and conversion of sulfone occurs simultaneously such that the sulfur atom in sulfone molecule is removed as sulfite to provide a low-sulfur diesel stream. The diesel stream for treatment is obtained as a result of the oxidation of a thiophene-rich diesel stream with an oxidant to provide a sulfone-containing diesel stream. The one-step process uses a single vessel having a shroud of vertical hanging fibers to affect the mass transfer of sulfones in diesel into contacting with an aqueous solution of alkali metal hydroxide where it is converted to sulfite and biphenyls. The sulfite-rich aqueous solution and low sulfur diesel are then separately removed from the vessel.Type: GrantFiled: August 31, 2010Date of Patent: November 5, 2013Assignee: Merichem CompanyInventors: Tiejun Zhang, Nachiketa Anand, Theodore Sidney Hoover
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Publication number: 20120048779Abstract: A one-step process for desulfurizing an oxidized sulfone-containing fuel stream, such as a diesel stream, is disclosed where mass transfer and conversion of sulfone occurs simultaneously such that the sulfur atom in sulfone molecule is removed as sulfite to provide a low-sulfur diesel stream. The diesel stream for treatment is obtained as a result of the oxidation of a thiophene-rich diesel stream with an oxidant to provide a sulfone-containing diesel stream. The one-step process uses a single vessel having a shroud of vertical hanging fibers to affect the mass transfer of sulfones in diesel into contacting with an aqueous solution of alkali metal hydroxide where it is converted to sulfite and biphenyls. The sulfite-rich aqueous solution and low sulfur diesel are then separately removed from the vessel.Type: ApplicationFiled: August 31, 2010Publication date: March 1, 2012Applicant: MERICHEM COMPANYInventors: Tiejun Zhang, Nachiketa Anand, Theodore Sidney Hoover