Patents by Inventor Supriya Devarajan

Supriya Devarajan 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: 12497532
    Abstract: This invention discloses formulations of mutually compatible sets of graphene, graphene-carbon, metal and dielectric inks for the fabrication of high performance membrane touch switches (MTS). The compositions of these inks are optimized to achieve higher degree of compatibility with highly engineered polymeric substrates, thereby offering a holistic solution for fabricating high-performance MTS. These sets of materials can also be used for fabrication of sensors, biosensors and RFIDs on flexible substrates, such as polymers and papers.
    Type: Grant
    Filed: February 24, 2023
    Date of Patent: December 16, 2025
    Assignees: Alpha Assembly Solutions Inc., MacDermid Autotype Limited
    Inventors: Nirmalya Kumar Chaki, Chetan Pravinchandra Shah, Barun Das, Supriya Devarajan, Siuli Sarkar, Rahul Raut, Bawa Singh, Anubhav Rustogi, Anna Jane Harris, Keith Paul Parsons, Jeffrey William Braham
  • Publication number: 20250026645
    Abstract: Methods for producing graphene-based products using graphene paste compositions. These methods include producing free-standing graphene foils, films, sheets, polymer supported graphene films, printed graphene structures, graphene features on polymer films, graphene substrates, and graphene metal foils. The methods impart functional characteristics, including corrosion protection and barrier properties to achieve selective enhancement of desired electrical, thermal, mechanical, barrier and other properties.
    Type: Application
    Filed: September 30, 2024
    Publication date: January 23, 2025
    Applicant: Alpha Assembly Solutions Inc.
    Inventors: Nirmalyakumar Chaki, Supriya Devarajan, Barun Das, Chetan Pravinchandra Shah, Venodh Manoharan, Rahul Raut, Bawa Singh, Ranjit Pandher
  • Publication number: 20240351882
    Abstract: A method of synthesizing high quality graphene for producing graphene particles and flakes is presented. The engineered qualities of the graphene include size, aspect ratio, edge definition, surface functionalization and controlling the number of layers. Fewer defects are found in the end graphene product in comparison to previous methods. The inventive method of producing graphene is less aggressive, lower cost and more environmentally friendly than previous methods. This method is applicable to both laboratory scale and high volume manufacturing for producing high quality graphene flakes.
    Type: Application
    Filed: May 15, 2024
    Publication date: October 24, 2024
    Inventors: Nirmalya Kumar CHAKI, Barun DAS, Supriya DEVARAJAN, Siuli SARKAR, Rahul RAUT, Bawa SINGH, Ranjit PANDHER, Oscar KHASELEV
  • Patent number: 12122679
    Abstract: Methods for producing graphene-based products using graphene paste compositions. These methods include producing free-standing graphene foils, films, sheets, polymer supported graphene films, printed graphene structures, graphene features on polymer films, graphene substrates, and graphene metal foils. The methods impart functional characteristics, including corrosion protection and barrier properties to achieve selective enhancement of desired electrical, thermal, mechanical, barrier and other properties.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: October 22, 2024
    Assignee: Alpha Assembly Solutions Inc.
    Inventors: Nirmalya Kumar Chaki, Supriya Devarajan, Barun Das, Chetan Pravinchandra Shah, Venodh Manoharan, Rahul Raut, Bawa Singh, Ranjit Pandher
  • Publication number: 20230287232
    Abstract: This invention discloses formulations of mutually compatible sets of graphene, graphene-carbon, metal and dielectric inks for the fabrication of high performance membrane touch switches (MTS). The compositions of these inks are optimized to achieve higher degree of compatibility with highly engineered polymeric substrates, thereby offering a holistic solution for fabricating high-performance MTS. These sets of materials can also be used for fabrication of sensors, biosensors and RFIDs on flexible substrates, such as polymers and papers.
    Type: Application
    Filed: February 24, 2023
    Publication date: September 14, 2023
    Inventors: Nirmalya Kumar CHAKI, Chetan Pravinchandra SHAH, Barun DAS, Supriya DEVARAJAN, Siuli SARKAR, Rahul RAUT, Bawa SINGH, Anubhav RUSTOGI, Anna Jane HARRIS, Keith Paul PARSONS, Jeffrey William BRAHAM
  • Patent number: 11624000
    Abstract: This invention discloses formulations of mutually compatible sets of graphene, graphene-carbon, metal and dielectric inks for the fabrication of high performance membrane touch switches (MTS). The compositions of these inks are optimized to achieve higher degree of compatibility with highly engineered polymeric substrates, thereby offering a holistic solution for fabricating high-performance MTS. These sets of materials can also be used for fabrication of sensors, biosensors and RFIDs on flexible substrates, such as polymers and papers.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: April 11, 2023
    Assignees: Alpha Assembly Solutions Inc., MacDermid Autotype Limited
    Inventors: Nirmalya Kumar Chaki, Chetan Pravinchandra Shah, Barun Das, Supriya Devarajan, Siuli Sarkar, Rahul Raut, Bawa Singh, Anubhav Rustogi, Anna Jane Harris, Keith Paul Parsons, Jeffrey William Braham
  • Publication number: 20220371089
    Abstract: A sintering composition, consisting essentially of: a solvent; and a metal complex dissolved in the solvent, wherein: the sintering composition contains at least 60 wt. % of the metal complex, based on the total weight of the sintering composition; and the sintering composition contains at least 20 wt. % of the metal of the metal complex, based on the total weight of the sintering composition.
    Type: Application
    Filed: September 24, 2020
    Publication date: November 24, 2022
    Inventors: Shamik GHOSHAL, Nirmalya Kumar CHAKI, Remya CHANDRAN, Manoharan VENODH, Bawa SINGH, Barun DAS, Niveditha NAGARAJAN, Rahul RAUT, Oscar KHASELEV, Ranjit PANDHER, Supriya DEVARAJAN, Anubhav RUSTOGI
  • Publication number: 20210061664
    Abstract: Methods for producing graphene-based products using graphene paste compositions. These methods include producing free-standing graphene foils, films, sheets, polymer supported graphene films, printed graphene structures, graphene features on polymer films, graphene substrates, and graphene metal foils. The methods impart functional characteristics, including corrosion protection and barrier properties to achieve selective enhancement of desired electrical, thermal, mechanical, barrier and other properties.
    Type: Application
    Filed: April 8, 2019
    Publication date: March 4, 2021
    Inventors: Nirmalya Kumar Chaki, Supriya Devarajan, Barun Das, Chetan Pravinchandra Shah, Venodh Manoharan, Rahul Raut, Bawa Singh, Ranjit Pandher
  • Publication number: 20200087528
    Abstract: This invention discloses formulations of mutually compatible sets of graphene, graphene-carbon, metal and dielectric inks for the fabrication of high performance membrane touch switches (MTS). The compositions of these inks are optimized to achieve higher degree of compatibility with highly engineered polymeric substrates, thereby offering a holistic solution for fabricating high-performance MTS. These sets of materials can also be used for fabrication of sensors, biosensors and RFIDs on flexible substrates, such as polymers and papers.
    Type: Application
    Filed: May 22, 2018
    Publication date: March 19, 2020
    Inventors: Nirmalya Kumar CHAKI, Chetan Pravinchandra SHAH, Barun DAS, Supriya DEVARAJAN, Siuli SARKAR, Rahul RAUT, Bawa SINGH, Anubhav RUSTOGI, Anna Jane HARRIS, Keith Paul PARSONS, Jeffrey William BRAHAM
  • Publication number: 20180072573
    Abstract: A method of synthesizing high quality graphene for producing graphene particles and flakes is presented. The engineered qualities of the graphene include size, aspect ratio, edge definition, surface functionalization and controlling the number of layers. Fewer defects are found in the end graphene product in comparison to previous methods. The inventive method of producing graphene is less aggressive, lower cost and more environmentally friendly than previous methods. This method is applicable to both laboratory scale and high volume manufacturing for producing high quality graphene flakes.
    Type: Application
    Filed: September 14, 2016
    Publication date: March 15, 2018
    Inventors: Nirmalya Kumar Chaki, Barun Das, Supriya Devarajan, Siuli Sarkar, Rahul Raut, Bawa Singh, Ranjit Pandher, Oscar Khaselev