Patents by Inventor Apurva Maheshwary
Apurva Maheshwary 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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Patent number: 11638896Abstract: The present invention provides for a method utilizing horizontal and vertical Adsorber bed(s) with multiple different reversible blower(s) and inputs operating in a vacuum pressure swing adsorption separation process to separate gases. The process is designed to provide a safer and more cost-effective adsorption system on a larger scale that captures and utilizes energy typically wasted during equipment transitions thereby achieving overall higher power efficiency.Type: GrantFiled: October 18, 2019Date of Patent: May 2, 2023Inventors: Lea Rose Vecchiarelli, Apurva Maheshwary, John Robert Ambriano, James Joseph Flaherty
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Publication number: 20210370224Abstract: The present invention provides for a method utilizing two sets of adsorber beds wherein one operates as a pressure swing adsorption system and the other operates as a vacuum swing adsorption system to separate carbon dioxide from a mixture of gases obtaining a higher purity of carbon dioxide thus separated than any prior art process.Type: ApplicationFiled: May 28, 2020Publication date: December 2, 2021Inventors: Lea Rose Vecchiarelli, Apurva Maheshwary, John Robert Ambriano, James Joseph Flaherty
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Patent number: 10058815Abstract: A method for separating ozone from a mixture of oxygen and ozone by feeding the mixture to at least one adsorbent bed containing an adsorbent material for adsorbing ozone. The adsorbent bed can be one of four adsorbent beds in a continuous adsorption cycle for producing ozone recycling the non-adsorbed oxygen together with make-up oxygen to the ozone generator or using it as a purge gas. An external purge gas is used to desorb the ozone to the customer process. With four beds present, for most of the time, two beds are in adsorption mode while the other two beds are in regeneration/production mode.Type: GrantFiled: December 13, 2016Date of Patent: August 28, 2018Assignee: Linde AktiengesellschaftInventors: Frank R. Fitch, Apurva Maheshwary
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Publication number: 20180065079Abstract: A method for separating ozone from a mixture of oxygen and ozone by feeding the mixture to at least one adsorbent bed containing an adsorbent material for adsorbing ozone. The adsorbent bed can be one of four adsorbent beds in a continuous adsorption cycle for producing ozone recycling the non-adsorbed oxygen together with make-up oxygen to the ozone generator or using it as a purge gas. An external purge gas is used to desorb the ozone to the customer process. With four beds present, for most of the time, two beds are in adsorption mode while the other two beds are in regeneration/production mode.Type: ApplicationFiled: December 13, 2016Publication date: March 8, 2018Inventors: Frank R. Fitch, Apurva Maheshwary
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Patent number: 8545603Abstract: The present invention provides for a method utilizing adsorber bed(s) and reversible blower(s) operating in a vacuum pressure swing adsorption separation process to separate gases. The process is designed to provide a safer and more cost-effective adsorption system that captures and utilizes energy typically wasted during equipment transitions thereby achieving overall higher power efficiency.Type: GrantFiled: June 24, 2010Date of Patent: October 1, 2013Assignee: Adsorptech Inc.Inventors: Apurva Maheshwary, John Robert Ambriano, James J Flaherty, Krishnamurti V Subramanian
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Publication number: 20120031267Abstract: The present invention provides for a method to cool the recycle gas in a product compressor being used with a cyclic adsorption process. It simplifies the scheme by eliminating need to provide a separate cooler for recycle gas.Type: ApplicationFiled: August 9, 2010Publication date: February 9, 2012Applicant: ADSORPTECH INC.Inventors: APURVA MAHESHWARY, John R. Ambriano, James J. Flaherty, Krishamurti V. Subramanian
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Publication number: 20120024157Abstract: The present invention provides for a method to make a multiple layered adsorber bed to adsorb and remove water, siloxanes, hydrogen sulfide, mercaptans, and carbon-dioxide from Biogas sources such as landfill gas. This bed can be operated by a pressure swing or vacuum swing adsorption process.Type: ApplicationFiled: July 29, 2010Publication date: February 2, 2012Applicant: ADSORPTECH INC.Inventors: Apurva Maheshwary, John R. Ambriano, James J. Flaherty, Krishamurti V. Subramanian
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Publication number: 20110315009Abstract: The present invention provides for a method utilizing adsorber bed(s) and reversible blower(s) operating in a vacuum pressure swing adsorption separation process to separate gases. The process is designed to provide a safer and more cost-effective adsorption system that captures and utilizes energy typically wasted during equipment transitions thereby achieving overall higher power efficiency.Type: ApplicationFiled: June 24, 2010Publication date: December 29, 2011Applicant: ADSORPTECH Inc.Inventors: JOHN R. AMBRIANO, APURVA MAHESHWARY, KRISHNAMURTI V. SUBRAMANIAN, JAMES J. FLAHERTY
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Patent number: 6524370Abstract: A two bed vacuum swing adsorption process for the production of oxygen is disclosed. Efficient use of air blowers and vacuum pumps maximizes the machine utilization and product gas purges in low flow and high flow modes to increase productivity while lessening power consumption.Type: GrantFiled: June 15, 2001Date of Patent: February 25, 2003Assignee: The BOC Group, Inc.Inventors: Apurva Maheshwary, Baechen Benson Wang, John Robert Ambriano, Timothy P. Thomson
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Patent number: 6521019Abstract: A method of separating a first gaseous component from a gas mixture comprising a first gaseous component and a second gaseous component comprising passing the gaseous mixture into an adsorption zone containing an adsorbent material capable of preferentially adsorbing at least one of the gaseous components in the gaseous mixture, to separate the first gaseous component from the second gaseous component wherein the adsorbent material is a monolithic wheel having a plurality of channels throughout, the channels being aligned parallel to the direction of flow of the gaseous mixture and having a wall thickness of less than 1 mm and recovering the non-preferentially adsorbed gaseous component from the adsorption zone. Preferably, the adsorption zone comprises multiple layers of monolithic structures in the shape of a wheel stacked one upon the other in a direction parallel to the direction of the flow of the gaseous mixture and formed by spirally winding a sheet of corrugated adsorbable material about a hub.Type: GrantFiled: January 18, 2001Date of Patent: February 18, 2003Assignee: The BOC Group, Inc.Inventors: Ravi Jain, Alberto I. LaCava, Apurva Maheshwary, John Robert Ambriano, Divyanshu R. Acharya, Frank R. Fitch
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Publication number: 20020017191Abstract: A two bed vacuum swing adsorption process for the production of oxygen is disclosed. Efficient use of air blowers and vacuum pumps maximizes the machine utilization and product gas purges in low flow and high flow modes to increase productivity while lessening power consumption.Type: ApplicationFiled: June 15, 2001Publication date: February 14, 2002Inventors: Apurva Maheshwary, Baechen Benson Wang, John Robert Ambriano, Timothy P. Thomson
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Publication number: 20010027723Abstract: A method of separating a first gaseous component from a gas mixture comprising the first gaseous component and a second gaseous component comprising passing the gaseous mixture into an adsorption zone containing an adsorbent material capable of preferentially adsorbing at least one of the gaseous components in the gaseous mixture, to separate the first gaseous component from the second gaseous component wherein the adsorbent material is a monolithic having a plurality of channels throughout, said channels being aligned parallel to the direction of flow of the gaseous mixture and having a wall thickness of less than 1 mm and (b) recovering the non-preferentially adsorbed gaseous component from the adsorption zone. Preferably, the adsorption zone comprises multiple layers of monolithic structures in the shape of a wheel stacked one upon the other in a direction parallel to the direction of the flow of the gaseous mixture and form by spirally winding a sheet of corrugated adsorbable material about a hub.Type: ApplicationFiled: January 18, 2001Publication date: October 11, 2001Inventors: Ravi Jain, Alberto I. LaCava, Apurva Maheshwary, John Robert Ambriano, Divyanshu R. Acharya, Frank R. Fitch
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Patent number: 6231644Abstract: A method of separating a first gaseous component from a gas mixture comprising the first gaseous component and a second gaseous component comprising passing the gaseous mixture into an adsorption zone containing an adsorbent material capable of preferentially adsorbing at least one of the gaseous components in the gaseous mixture, to separate the first gaseous component from the second gaseous component wherein the adsorbent material is a monolith having a plurality of channels throughout, the channels being aligned parallel to the direction of flow of the gaseous mixture and having a wall thickness of less than 1 mm and (b) recovering the non-preferentially adsorbed gaseous component from the adsorption zone. Preferably, the adsorption zone comprises multiple layers of monolithic structures in the shape of a wheel stacked one upon the other in a direction parallel to the direction of the flow of the gaseous mixture and form by spirally winding a sheet of corrugated adsorbable material about a hub.Type: GrantFiled: July 23, 1999Date of Patent: May 15, 2001Assignee: The BOC Group, Inc.Inventors: Ravi Jain, Alberto I. LaCava, Apurva Maheshwary, John Robert Ambriano, Divyanshu R. Acharya, Frank R. Fitch
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Patent number: 5997611Abstract: A process for separating the components of a gas mixture in a single adsorption vessel pressure swing adsorption system including the steps: (a) cocurrently passing the gas mixture through the adsorption vessel at a desired adsorption pressure and collecting the nonadsorbed product gas in a storage vessel, (b) cocurrently depressurizing the adsorption vessel and pumping gas removed from the adsorption vessel during this step to the storage vessel, (c) regenerating the adsorbent in the adsorption vessel by countercurrently depressurizing the adsorption vessel, and (d) repressurizing the adsorption vessel to the desired adsorption pressure. Steps (a) and (b) are carried out using gas pumping or compressing devices, and the same or different gas pumping or compressing devices can be used for steps (a) and (b). Step (c) can also be carried out with the pumping device used in step (a).Type: GrantFiled: July 24, 1998Date of Patent: December 7, 1999Assignee: The BOC Group, Inc.Inventors: Shain-Jer Doong, Andrew William Shuttleworth, John R. Ambriano, Apurva Maheshwary, Ian Douglas Travis