Patents by Inventor Diptesh Mukherjee

Diptesh Mukherjee 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: 11009288
    Abstract: An insulation structure for an appliance includes a cabinet having an outer wrapper and an inner liner, with an insulating cavity defined therebetween. Insulating powder material is disposed substantially throughout the insulating cavity. An insulating gas is disposed within the insulating cavity, wherein the insulating powder material is combined with the insulating gas and cooperatively defines a suspended state and a precipitated state. The suspended state is defined by the insulating gas in motion and the insulating powder being in an aeolian suspension within the insulating gas while in motion. The precipitated state is defined by the insulating gas being in a deposition state and the insulating powder being precipitated from the insulating gas and deposited within the insulating cavity.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: May 18, 2021
    Assignee: Whirlpool Corporation
    Inventors: Lakshya J. Deka, Rameet Singh Grewal, Diptesh Mukherjee, Abhay Naik
  • Patent number: 10619912
    Abstract: A vacuum insulated structure includes a multi-layer sheet of material comprising at least one layer of barrier material that is disposed between first and second outer layers. The barrier material and the first and second outer layers comprise thermoplastic polymers or elastomeric or hybrid material systems. The multi-layer sheet of material is thermoformed or vacuum formed to form a non-planar first component having a central portion and four sidewalls extending transversely from the central portion. A second component having a central portion and four sidewalls extending transversely from the central portion is secured to the first component to form an interior space therebetween. Porous filler material is positioned in the interior space, and a vacuum is formed in the interior space by removing gasses and moisture (water vapor). The first and second components are sealed together to form a vacuum insulated structure.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: April 14, 2020
    Assignee: Whirlpool Corporation
    Inventors: Hua Liu, Laksha J. Deka, Mohamed Alshourbagy, Diptesh Mukherjee
  • Patent number: 10610985
    Abstract: A method of forming a vacuum insulated structure includes providing a multi-layer sheet of material comprising at least one layer of barrier material that is disposed between first and second outer layers. The barrier material and the first and second outer layers comprise thermoplastic polymers. The multi-layer sheet of material is thermoformed to form a non-planar first component. The first component is at least partially coated utilizing a plasma polymerization process or a physical vapor deposition process to improve the barrier properties of the first component. The method further includes securing a second component to the first component to form an interior space therebetween. Porous filler material is positioned in the interior space, and a vacuum is formed in the interior space.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: April 7, 2020
    Assignee: Whirlpool Corporation
    Inventors: Hua Liu, Laksha J. Deka, Mohamed Alshourbagy, Diptesh Mukherjee
  • Publication number: 20200056830
    Abstract: A vacuum insulated structure includes a multi-layer sheet of material comprising at least one layer of barrier material that is disposed between first and second outer layers. The barrier material and the first and second outer layers comprise thermoplastic polymers or elastomeric or hybrid material systems. The multi-layer sheet of material is thermoformed or vacuum formed to form a non-planar first component having a central portion and four sidewalls extending transversely from the central portion. A second component having a central portion and four sidewalls extending transversely from the central portion is secured to the first component to form an interior space therebetween. Porous filler material is positioned in the interior space, and a vacuum is formed in the interior space by removing gasses and moisture (water vapor). The first and second components are sealed together to form a vacuum insulated structure.
    Type: Application
    Filed: October 25, 2019
    Publication date: February 20, 2020
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Hua Liu, Laksha J. Deka, Mohamed Alshourbagy, Diptesh Mukherjee
  • Patent number: 10514198
    Abstract: A vacuum insulated structure includes a multi-layer sheet of material comprising at least one layer of barrier material that is disposed between first and second outer layers. The barrier material and the first and second outer layers comprise thermoplastic polymers or elastomeric or hybrid material systems. The multi-layer sheet of material is thermoformed or vacuum formed to form a non-planar first component having a central portion and four sidewalls extending transversely from the central portion. A second component having a central portion and four sidewalls extending transversely from the central portion is secured to the first component to form an interior space therebetween. Porous filler material is positioned in the interior space, and a vacuum is formed in the interior space by removing gasses and moisture (water vapor). The first and second components are sealed together to form a vacuum insulated structure.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: December 24, 2019
    Assignee: Whirlpool Corporation
    Inventors: Hua Liu, Laksha J. Deka, Mohamed Alshourbagy, Diptesh Mukherjee
  • Publication number: 20190360743
    Abstract: An insulation structure for an appliance includes a cabinet having an outer wrapper and an inner liner, with an insulating cavity defined therebetween. Insulating powder material is disposed substantially throughout the insulating cavity. An insulating gas is disposed within the insulating cavity, wherein the insulating powder material is combined with the insulating gas and cooperatively defines a suspended state and a precipitated state. The suspended state is defined by the insulating gas in motion and the insulating powder being in an aeolian suspension within the insulating gas while in motion. The precipitated state is defined by the insulating gas being in a deposition state and the insulating powder being precipitated from the insulating gas and deposited within the insulating cavity.
    Type: Application
    Filed: August 7, 2019
    Publication date: November 28, 2019
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Lakshya J. Deka, Rameet Singh Grewal, Diptesh Mukherjee, Abhay Naik
  • Patent number: 10429125
    Abstract: An insulation structure for an appliance includes a cabinet having an outer wrapper and an inner liner, with an insulating cavity defined therebetween. A plurality of hollow insulating organic/inorganic spheres is disposed within the insulating cavity, wherein a secondary insulating volume is defined between the plurality of hollow insulating organic/inorganic spheres and an interior surface of the cabinet. The interior surface of the cabinet defines the insulating cavity. An insulating fill material is disposed within the secondary insulating volume, wherein the insulating fill material and the plurality of hollow insulating organic/inorganic spheres define a substantially uniform insulating material.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: October 1, 2019
    Assignee: Whirlpool Corporation
    Inventors: Lakshya J. Deka, Diptesh Mukherjee, Andrea Olivani
  • Patent number: 10422573
    Abstract: An insulation structure for an appliance includes a cabinet having an outer wrapper and an inner liner, with an insulating cavity defined therebetween. Insulating powder material is disposed substantially throughout the insulating cavity. An insulating gas is disposed within the insulating cavity, wherein the insulating powder material is combined with the insulating gas and cooperatively defines a suspended state and a precipitated state. The suspended state is defined by the insulating gas in motion and the insulating powder being in an aeolian suspension within the insulating gas while in motion. The precipitated state is defined by the insulating gas being in a deposition state and the insulating powder being precipitated from the insulating gas and deposited within the insulating cavity.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: September 24, 2019
    Assignee: Whirlpool Corporation
    Inventors: Lakshya J. Deka, Rameet Singh Grewal, Diptesh Mukherjee, Abhay Naik
  • Publication number: 20180292124
    Abstract: A vacuum insulated structure includes a multi-layer sheet of material comprising at least one layer of barrier material that is disposed between first and second outer layers. The barrier material and the first and second outer layers comprise thermoplastic polymers or elastomeric or hybrid material systems. The multi-layer sheet of material is thermoformed or vacuum formed to form a non-planar first component having a central portion and four sidewalls extending transversely from the central portion. A second component having a central portion and four sidewalls extending transversely from the central portion is secured to the first component to form an interior space therebetween. Porous filler material is positioned in the interior space, and a vacuum is formed in the interior space by removing gasses and moisture (water vapor). The first and second components are sealed together to form a vacuum insulated structure.
    Type: Application
    Filed: June 8, 2018
    Publication date: October 11, 2018
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Hua Liu, Laksha J. Deka, Mohamed Alshourbagy, Diptesh Mukherjee
  • Patent number: 10030905
    Abstract: A method of fabricating a vacuum insulated refrigerator structure includes injection molding a first layer of a first polymer material. A second layer of a second polymer material is injection molded over at least a portion of the first layer, and a third layer of a third polymer material is injection molded over at least a portion of the second layer to form a first component. At least one of the layers is impervious to one or more gasses. A second component is secured to the first component to form a vacuum cavity therebetween. The vacuum cavity is filled with a porous material, and the vacuum cavity is evacuated to form a vacuum. At least one of the first and third layers includes a structural reinforcement such as a rib or screw boss of increased thickness that is formed during the injection molding process.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: July 24, 2018
    Assignee: Whirlpool Corporation
    Inventors: Paul B. Allard, Berhanu Allo, Lakshya J. Deka, Hua Liu, Diptesh Mukherjee
  • Patent number: 10018406
    Abstract: A method of forming a vacuum insulated refrigerator cabinet structure includes providing a multi-layer sheet of material comprising at least one layer of barrier material that is disposed between first and second outer structural layers. The barrier material and the first and second outer layers comprise thermoplastic polymers. The multi-layer sheet of material is thermoformed to form a non-planar first component having a central portion and four sidewalls extending transversely from the central portion. The method further includes securing a second component having a central portion and four sidewalls extending transversely from the central portion to the first component to form an interior space therebetween. Porous filler material is positioned in the interior space, and a vacuum is formed in the interior space. The first and second components are sealed together to form a vacuum insulated refrigerator cabinet structure.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: July 10, 2018
    Assignee: Whirlpool Corporation
    Inventors: Hua Liu, Laksha J. Deka, Mohamed Alshourbagy, Diptesh Mukherjee
  • Patent number: 9976798
    Abstract: An insulated cabinet structure includes an inner liner having a plurality of walls defining a refrigerator compartment, and an external wrapper having a plurality of walls defining a refrigerator compartment receiving area. An insulation gap is formed between the walls of the inner liner and the walls of the external wrapper. A first insulation material is positioned on a wall of the external wrapper and extends outwardly into the insulation gap to partially fill the insulation gap. The first insulation material includes a renewable resource component having a particle size in a range from about 10 microns to about 25 microns. A second insulation material is disposed in the insulation gap, such that the first insulation material and the second insulation material together substantially fill the insulation gap.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: May 22, 2018
    Assignee: Whirlpool Corporation
    Inventors: Diptesh Mukherjee, Rameet Singh Grewal
  • Publication number: 20180031306
    Abstract: An insulated cabinet structure includes an inner liner having a plurality of walls defining a refrigerator compartment, and an external wrapper having a plurality of walls defining a refrigerator compartment receiving area. An insulation gap is formed between the walls of the inner liner and the walls of the external wrapper. A first insulation material is positioned on a wall of the external wrapper and extends outwardly into the insulation gap to partially fill the insulation gap. The first insulation material includes a renewable resource component having a particle size in a range from about 10 microns to about 25 microns. A second insulation material is disposed in the insulation gap, such that the first insulation material and the second insulation material together substantially fill the insulation gap.
    Type: Application
    Filed: September 12, 2017
    Publication date: February 1, 2018
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Diptesh Mukherjee, Rameet Singh Grewal
  • Patent number: 9791205
    Abstract: An insulated cabinet structure includes an inner liner having a plurality of walls defining a refrigerator compartment, and an external wrapper having a plurality of walls defining a refrigerator compartment receiving area. An insulation gap is formed between the walls of the inner liner and the walls of the external wrapper. A first insulation material is positioned on a wall of the external wrapper and extends outwardly into the insulation gap to partially fill the insulation gap. The first insulation material includes a renewable resource component having a particle size in a range from about 10 microns to about 25 microns. A second insulation material is disposed in the insulation gap, such that the first insulation material and the second insulation material together substantially fill the insulation gap.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: October 17, 2017
    Assignee: Whirlpool Corporation
    Inventors: Diptesh Mukherjee, Rameet Singh Grewal
  • Publication number: 20170184340
    Abstract: A method of fabricating a vacuum insulated refrigerator structure includes injection molding a first layer of a first polymer material. A second layer of a second polymer material is injection molded over at least a portion of the first layer, and a third layer of a third polymer material is injection molded over at least a portion of the second layer to form a first component. At least one of the layers is impervious to one or more gasses. A second component is secured to the first component to form a vacuum cavity therebetween. The vacuum cavity is filled with a porous material, and the vacuum cavity is evacuated to form a vacuum. At least one of the first and third layers includes a structural reinforcement such as a rib or screw boss of increased thickness that is formed during the injection molding process.
    Type: Application
    Filed: December 29, 2015
    Publication date: June 29, 2017
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Paul B. Allard, Berhanu Allo, Lakshya J. Deka, Hua Liu, Diptesh Mukherjee
  • Publication number: 20170184339
    Abstract: A method of forming a vacuum insulated refrigerator cabinet structure includes providing a multi-layer sheet of material comprising at least one layer of barrier material that is disposed between first and second outer structural layers. The barrier material and the first and second outer layers comprise thermoplastic polymers. The multi-layer sheet of material is thermoformed to form a non-planar first component having a central portion and four sidewalls extending transversely from the central portion. The method further includes securing a second component having a central portion and four sidewalls extending transversely from the central portion to the first component to form an interior space therebetween. Porous filler material is positioned in the interior space, and a vacuum is formed in the interior space. The first and second components are sealed together to form a vacuum insulated refrigerator cabinet structure.
    Type: Application
    Filed: December 28, 2015
    Publication date: June 29, 2017
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Hua Liu, Laksha J. Deka, Mohamed Alshourbagy, Diptesh Mukherjee
  • Publication number: 20170182607
    Abstract: A method of forming a vacuum insulated structure includes providing a multi-layer sheet of material comprising at least one layer of barrier material that is disposed between first and second outer layers. The barrier material and the first and second outer layers comprise thermoplastic polymers. The multi-layer sheet of material is thermoformed to form a non-planar first component. The first component is at least partially coated utilizing a plasma polymerization process or a physical vapor deposition process to improve the barrier properties of the first component. The method further includes securing a second component to the first component to form an interior space therebetween. Porous filler material is positioned in the interior space, and a vacuum is formed in the interior space.
    Type: Application
    Filed: December 28, 2015
    Publication date: June 29, 2017
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Hua Liu, Laksha J. Deka, Mohamed Alshourbagy, Diptesh Mukherjee
  • Publication number: 20170167781
    Abstract: An insulated cabinet structure includes an inner liner having a plurality of walls defining a refrigerator compartment, and an external wrapper having a plurality of walls defining a refrigerator compartment receiving area. An insulation gap is formed between the walls of the inner liner and the walls of the external wrapper. A first insulation material is positioned on a wall of the external wrapper and extends outwardly into the insulation gap to partially fill the insulation gap. The first insulation material includes a renewable resource component having a particle size in a range from about 10 microns to about 25 microns. A second insulation material is disposed in the insulation gap, such that the first insulation material and the second insulation material together substantially fill the insulation gap.
    Type: Application
    Filed: December 9, 2015
    Publication date: June 15, 2017
    Applicant: Whirlpool Corporation
    Inventors: Diptesh Mukherjee, Rameet Singh Grewal
  • Publication number: 20170159999
    Abstract: An insulation structure for an appliance includes a cabinet having an outer wrapper and an inner liner, with an insulating cavity defined therebetween. A plurality of hollow insulating organic/inorganic spheres is disposed within the insulating cavity, wherein a secondary insulating volume is defined between the plurality of hollow insulating organic/inorganic spheres and an interior surface of the cabinet. The interior surface of the cabinet defines the insulating cavity. An insulating fill material is disposed within the secondary insulating volume, wherein the insulating fill material and the plurality of hollow insulating organic/inorganic spheres define a substantially uniform insulating material.
    Type: Application
    Filed: December 8, 2015
    Publication date: June 8, 2017
    Applicant: Whirlpool Corporation
    Inventors: Lakshya J. Deka, Diptesh Mukherjee, Andrea Olivani
  • Publication number: 20170160001
    Abstract: An insulation structure for an appliance includes a cabinet having an outer wrapper and an inner liner, with an insulating cavity defined therebetween. Insulating powder material is disposed substantially throughout the insulating cavity. An insulating gas is disposed within the insulating cavity, wherein the insulating powder material is combined with the insulating gas and cooperatively defines a suspended state and a precipitated state. The suspended state is defined by the insulating gas in motion and the insulating powder being in an aeolian suspension within the insulating gas while in motion. The precipitated state is defined by the insulating gas being in a deposition state and the insulating powder being precipitated from the insulating gas and deposited within the insulating cavity.
    Type: Application
    Filed: December 8, 2015
    Publication date: June 8, 2017
    Applicant: Whirlpool Corporation
    Inventors: Lakshya J. Deka, Rameet Singh Grewal, Diptesh Mukherjee, Abhay Naik