Patents by Inventor Ashish Nigam

Ashish Nigam 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).

  • Patent number: 11971209
    Abstract: A filling system for a vacuum insulated structure is provided having a powder processor including a hopper having an inner hopper wall and an outer hopper wall. The filling system also includes a vacuum insulated structure having a liner positioned inside a wrapper, a trim breaker coupling an outer liner edge and an outer wrapper edge to form a shell defining an internal cavity with at least one gas permeable feature positioned in the internal cavity configured to help apply a vacuum. A loading port is positioned on a surface of the shell. The powder processor loads the shell with a heated and at least partially degassed vacuum insulation material through the loading port while a vacuum is applied to the shell through the at least one gas permeable feature.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: April 30, 2024
    Assignee: Whirlpool Corporation
    Inventors: Gustavo Frattini, Anna Jedralski, Ashish Nigam, Subrata Shannigrahi
  • Publication number: 20240047699
    Abstract: Provided is an electrode comprising a current collector, a base layer on a surface of the current collector, and an active material (e.g., cathode, anode) layer on the base layer. The base layer comprises microchannels that are at least partially horizontally aligned with respect to the first surface of the current collector. Also provided are methods for preparing electrodes and electrode assemblies, and methods of filling liquid electrolyte into electrode assemblies. Electric vehicle systems comprising the electrode assemblies are also provided.
    Type: Application
    Filed: August 8, 2022
    Publication date: February 8, 2024
    Inventors: Ashish NIGAM, Rajeev DHIMAN, Christopher Surya KOMPELLA
  • Patent number: 11828402
    Abstract: An auger feeder includes a hopper having an inner hopper wall and an outer hopper wall where the inner hopper wall includes an air permeable surface. A space is positioned between the inner and outer hopper walls. A heater is coupled to an outside edge of the inner hopper wall or a n outside edge of the outer hopper wall while a feed screw is positioned along an inside edge of the inner hopper wall. The auger feeder additionally includes an evacuator coupled to a vacuum port that is positioned in the outer hopper wall. The auger feeder also includes an aperture exit positioned at a bottom of the inner and outer hopper walls.
    Type: Grant
    Filed: July 28, 2022
    Date of Patent: November 28, 2023
    Assignee: Whirlpool Corporation
    Inventors: Abhay Naik, Ashish Nigam
  • Publication number: 20230341173
    Abstract: An appliance cabinet includes a structural envelope having an exterior surface and an interior surface that defines an insulating cavity, wherein the insulating cavity defines an at least partial vacuum. A plurality of silica-based agglomerates are disposed within the insulating cavity, wherein each agglomerate of the plurality of silica-based agglomerates includes silica-based powder insulation material that is water-densified and is at least substantially free of a material binder. A secondary insulation material is disposed within interstitial spaces defined between the plurality of silica-based agglomerates, wherein the plurality of silica-based agglomerates defines an interior structure that resists inward compressive forces exerted as a result of the at least partial vacuum defined within the insulating cavity.
    Type: Application
    Filed: June 28, 2023
    Publication date: October 26, 2023
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Ashish Nigam, Shayta Roy
  • Patent number: 11740009
    Abstract: An appliance cabinet includes a structural envelope having an exterior surface and an interior surface that defines an insulating cavity, wherein the insulating cavity defines an at least partial vacuum. A plurality of silica-based agglomerates are disposed within the insulating cavity, wherein each agglomerate of the plurality of silica-based agglomerates includes silica-based powder insulation material that is water-densified and is at least substantially free of a material binder. A secondary insulation material is disposed within interstitial spaces defined between the plurality of silica-based agglomerates, wherein the plurality of silica-based agglomerates defines an interior structure that resists inward compressive forces exerted as a result of the at least partial vacuum defined within the insulating cavity.
    Type: Grant
    Filed: December 8, 2021
    Date of Patent: August 29, 2023
    Assignee: Whirlpool Corporation
    Inventors: Ashish Nigam, Shayta Roy
  • Patent number: 11724228
    Abstract: A vacuum insulated compartment includes an outer wrapper and an inner liner that is sealed to the outer wrapper. A cavity is defined therebetween. The cavity includes a negative pressure. An insulation material is disposed in the cavity. A getter assembly is disposed in the cavity and includes a primary getter material that is deposited on a plate. A cover layer is deposited over the primary getter material on the plate. A vessel is nested within the primary getter material. A secondary getter material is disposed within the vessel. A protective enclosure is disposed around the getter assembly.
    Type: Grant
    Filed: February 3, 2022
    Date of Patent: August 15, 2023
    Assignee: Whirlpool Corporation
    Inventors: Gustavo Frattini, Ashish Nigam
  • Patent number: 11655933
    Abstract: A method for preparing a vacuum insulated panel includes forming an internal cavity between a liner and a wrapper and preparing a filler material to be disposed in the internal cavity. The filler material includes a first part and a second part and is prepared by treating a surface of the first part. A coating is applied to the surface of the first part with a chemical having a first charge. The coating forms a first surface charge on the surface of the first part. The method further includes mixing the first part with the second part forming the filler material. The second part includes a material having a second surface charge opposite the first surface charge.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: May 23, 2023
    Assignee: Whirlpool Corporation
    Inventors: Ashish Nigam, Devidas B. Raskar
  • Publication number: 20220364674
    Abstract: An auger feeder includes a hopper having an inner hopper wall and an outer hopper wall where the inner hopper wall includes an air permeable surface. A space is positioned between the inner and outer hopper walls. A heater is coupled to an outside edge of the inner hopper wall or a n outside edge of the outer hopper wall while a feed screw is positioned along an inside edge of the inner hopper wall. The auger feeder additionally includes an evacuator coupled to a vacuum port that is positioned in the outer hopper wall. The auger feeder also includes an aperture exit positioned at a bottom of the inner and outer hopper walls.
    Type: Application
    Filed: July 28, 2022
    Publication date: November 17, 2022
    Applicant: WHIRLPOOL CORPORATION
    Inventors: ABHAY NAIK, ASHISH NIGAM
  • Patent number: 11435023
    Abstract: An auger feeder includes a hopper having an inner hopper wall and an outer hopper wall where the inner hopper wall includes an air permeable surface. A space is positioned between the inner and outer hopper walls. A heater is coupled to an outside edge of the inner hopper wall or an outside edge of the outer hopper wall while a feed screw is positioned along an inside edge of the inner hopper wall. The auger feeder additionally includes an evacuator coupled to a vacuum port that is positioned in the outer hopper wall. The auger feeder also includes an aperture exit positioned at a bottom of the inner and outer hopper walls.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: September 6, 2022
    Assignee: Whirlpool Corporation
    Inventors: Abhay Naik, Ashish Nigam
  • Publication number: 20220161181
    Abstract: A vacuum insulated compartment includes an outer wrapper and an inner liner that is sealed to the outer wrapper. A cavity is defined therebetween. The cavity includes a negative pressure. An insulation material is disposed in the cavity. A getter assembly is disposed in the cavity and includes a primary getter material that is deposited on a plate. A cover layer is deposited over the primary getter material on the plate. A vessel is nested within the primary getter material. A secondary getter material is disposed within the vessel. A protective enclosure is disposed around the getter assembly.
    Type: Application
    Filed: February 3, 2022
    Publication date: May 26, 2022
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Gustavo Frattini, Ashish Nigam
  • Publication number: 20220099238
    Abstract: A method for preparing a vacuum insulated panel includes forming an internal cavity between a liner and a wrapper and preparing a filler material to be disposed in the internal cavity. The filler material includes a first part and a second part and is prepared by treating a surface of the first part. A coating is applied to the surface of the first part with a chemical having a first charge. The coating forms a first surface charge on the surface of the first part. The method further includes mixing the first part with the second part forming the filler material. The second part includes a material having a second surface charge opposite the first surface charge.
    Type: Application
    Filed: December 14, 2021
    Publication date: March 31, 2022
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Ashish Nigam, Devidas B. Raskar
  • Publication number: 20220090850
    Abstract: An appliance cabinet includes a structural envelope having an exterior surface and an interior surface that defines an insulating cavity, wherein the insulating cavity defines an at least partial vacuum. A plurality of silica-based agglomerates are disposed within the insulating cavity, wherein each agglomerate of the plurality of silica-based agglomerates includes silica-based powder insulation material that is water-densified and is at least substantially free of a material binder. A secondary insulation material is disposed within interstitial spaces defined between the plurality of silica-based agglomerates, wherein the plurality of silica-based agglomerates defines an interior structure that resists inward compressive forces exerted as a result of the at least partial vacuum defined within the insulating cavity.
    Type: Application
    Filed: December 8, 2021
    Publication date: March 24, 2022
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Ashish Nigam, Shayta Roy
  • Patent number: 11280441
    Abstract: The disclosure provides for a method for preparing a vacuum insulated panel. The method comprises forming an internal cavity between a liner and a wrapper and preparing filler material to be disposed in the internal cavity. The filler material comprises a first part and a second part. Preparing the filler material comprises treating a surface of the first part, wherein the treating prepares the surface to receive a coating comprising a first charge. The preparing further comprises coating the surface of the first part with a chemical comprising a first charge. The coating forms a first surface charge on the surface of the first part. The method further comprises mixing the first part with the second part forming the filler material. The second part comprises a material having a second surface charge opposite the first surface charge.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: March 22, 2022
    Assignee: Whirlpool Corporation
    Inventors: Ashish Nigam, Devidas B. Raskar
  • Patent number: 11241651
    Abstract: A getter assembly for a vacuumed compartment having a plate. A primary getter material is deposited on the plate. A cover layer is deposited over the primary getter material on the plate.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: February 8, 2022
    Assignee: Whirlpool Corproation
    Inventors: Gustavo Frattini, Ashish Nigam
  • Patent number: 11226153
    Abstract: An appliance cabinet includes a structural envelope having an exterior surface and an interior surface that defines an insulating cavity, wherein the insulating cavity defines an at least partial vacuum. A plurality of silica-based agglomerates are disposed within the insulating cavity, wherein each agglomerate of the plurality of silica-based agglomerates includes silica-based powder insulation material that is water-densified and is at least substantially free of a material binder. A secondary insulation material is disposed within interstitial spaces defined between the plurality of silica-based agglomerates, wherein the plurality of silica-based agglomerates defines an interior structure that resists inward compressive forces exerted as a result of the at least partial vacuum defined within the insulating cavity.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: January 18, 2022
    Assignee: Whirlpool Corporation
    Inventors: Ashish Nigam, Shayta Roy
  • Publication number: 20210372690
    Abstract: A filling system for a vacuum insulated structure is provided having a powder processor including a hopper having an inner hopper wall and an outer hopper wall. The filling system also includes a vacuum insulated structure having a liner positioned inside a wrapper, a trim breaker coupling an outer liner edge and an outer wrapper edge to form a shell defining an internal cavity with at least one gas permeable feature positioned in the internal cavity configured to help apply a vacuum. A loading port is positioned on a surface of the shell. The powder processor loads the shell with a heated and at least partially degassed vacuum insulation material through the loading port while a vacuum is applied to the shell through the at least one gas permeable feature.
    Type: Application
    Filed: September 5, 2018
    Publication date: December 2, 2021
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Gustavo Frattini, Anna Jedralski, Ashish Nigam, Subrata Shannigrahi
  • Publication number: 20210190254
    Abstract: An auger feeder includes a hopper having an inner hopper wall and an outer hopper wall where the inner hopper wall includes an air permeable surface. A space is positioned between the inner and outer hopper walls. A heater is coupled to an outside edge of the inner hopper wall or a n outside edge of the outer hopper wall while a feed screw is positioned along an inside edge of the inner hopper wall. The auger feeder additionally includes an evacuator coupled to a vacuum port that is positioned in the outer hopper wall. The auger feeder also includes an aperture exit positioned at a bottom of the inner and outer hopper walls.
    Type: Application
    Filed: October 26, 2017
    Publication date: June 24, 2021
    Applicant: WHIRLPOOL CORPORATION
    Inventors: ABHAY NAIK, ASHISH NIGAM
  • Publication number: 20210180738
    Abstract: The disclosure provides for a method for preparing a vacuum insulated panel. The method comprises forming an internal cavity between a liner and a wrapper and preparing filler material to be disposed in the internal cavity. The filler material comprises a first part and a second part. Preparing the filler material comprises treating a surface of the first part, wherein the treating prepares the surface to receive a coating comprising a first charge. The preparing further comprises coating the surface of the first part with a chemical comprising a first charge. The coating forms a first surface charge on the surface of the first part. The method further comprises mixing the first part with the second part forming the filler material. The second part comprises a material having a second surface charge opposite the first surface charge.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 17, 2021
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Ashish Nigam, Devidas B. Raskar
  • Publication number: 20210018254
    Abstract: An appliance cabinet includes a structural envelope having an exterior surface and an interior surface that defines an insulating cavity, wherein the insulating cavity defines an at least partial vacuum. A plurality of silica-based agglomerates are disposed within the insulating cavity, wherein each agglomerate of the plurality of silica-based agglomerates includes silica-based powder insulation material that is water-densified and is at least substantially free of a material binder. A secondary insulation material is disposed within interstitial spaces defined between the plurality of silica-based agglomerates, wherein the plurality of silica-based agglomerates defines an interior structure that resists inward compressive forces exerted as a result of the at least partial vacuum defined within the insulating cavity.
    Type: Application
    Filed: April 10, 2018
    Publication date: January 21, 2021
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Ashish Nigam, Shayta Roy
  • Publication number: 20210002162
    Abstract: A low-density insulating material for use in a vacuum insulated structure for an appliance includes a plurality of microspheres that includes a plurality of leached microspheres. Each leached microsphere has an outer wall and an interior volume. The outer wall has a hole that extends through the outer wall and to the interior volume. A binder engages outer surfaces of the plurality of leached microspheres, wherein the binder cooperates with the plurality of leached microspheres to form at least one microsphere aggregate. The interior volume of each leached microsphere defines an insulating space that includes an insulating gas. The insulating space of each leached microsphere is at least partially defined by the binder.
    Type: Application
    Filed: April 9, 2018
    Publication date: January 7, 2021
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Lakshya J. Deka, Nicole M. Ernat, Ashish Nigam, Shayta Roy