Patents by Inventor Laksha J. Deka

Laksha J. Deka 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: 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: 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: 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
  • 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: 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