Patents by Inventor Devidas Raskar

Devidas Raskar 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).

  • Publication number: 20240044571
    Abstract: A vacuum insulated structure for an appliance includes a trim breaker defining a first groove and a second groove. A first panel is disposed within the first groove and coupled to the trim breaker. A second panel is disposed within the second groove and coupled to the trim breaker. An adhesive is disposed within the first and second grooves and coupled to the first and second panels, respectively, wherein the trim breaker has a heat deflection temperature of at least 100° Celsius.
    Type: Application
    Filed: August 5, 2022
    Publication date: February 8, 2024
    Applicant: WHIRLPOOL CORPORATION
    Inventor: Devidas Raskar
  • Patent number: 10217876
    Abstract: The invention relates to a passivated emitter rear solar cell, comprising a silicon substrate having a front and back surface, a rear passivation layer on the back surface of the silicon substrate having a plurality of open holes formed therein, an aluminum back contact layer formed in the open holes of the rear passivation layer, and at least one backside soldering tab on the back surface of the silicon substrate. The backside soldering tab is formed from an electroconductive paste composition comprising conductive metallic particles, at least one lead-free glass frit, and an organic vehicle comprising at least one silicone oil.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: February 26, 2019
    Assignee: HERAEUS PRECIOUS METALS NORTH AMERICA CONSHOHOCKEN LLC
    Inventors: Devidas Raskar, Yi Yang, Lixin Song, Guang Zhai
  • Patent number: 9722102
    Abstract: In general, the invention relates to electro-conductive pastes comprising a glass which comprises molybdenum and lead as a constituent of a solar cell paste, and the use of such in the preparation of photovoltaic solar cells. More specifically, the invention relates to electroconductive pastes, precursors, processes for preparation of solar cells, solar cells and solar modules. The invention relates to an electro-conductive paste at least comprising as paste constituents: a) metallic particles; b) a glass; c) an organic vehicle; and d) an additive; wherein the glass comprises the following: i) Pb in the range from about 1 to about 94 wt. %; ii) Mo in the range from about 2 to about 30 wt. %; iii) O in the range from about 1 to about 50 wt. %; with the wt. % in each case being based on the total weight of the glass.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: August 1, 2017
    Assignee: Heraeus Precious Metals North America Conshohocken LLC
    Inventors: Devidas Raskar, Xiao Chao Song, Chi Long Chen
  • Publication number: 20170200837
    Abstract: The invention relates to a passivated emitter rear solar cell, comprising a silicon substrate having a front and back surface, a rear passivation layer on the back surface of the silicon substrate having a plurality of open holes formed therein, an aluminum back contact layer formed in the open holes of the rear passivation layer, and at least one backside soldering tab on the back surface of the silicon substrate. The backside soldering tab is formed from an electroconductive paste composition comprising conductive metallic particles, at least one lead-free glass frit, and an organic vehicle comprising at least one silicone oil.
    Type: Application
    Filed: March 24, 2017
    Publication date: July 13, 2017
    Inventors: DEVIDAS RASKAR, Yi Yang, Lixin Song, Guang Zhai
  • Publication number: 20150243808
    Abstract: In general, the invention relates to electro-conductive pastes comprising a glass which comprises molybdenum and lead as a constituent of a solar cell paste, and the use of such in the preparation of photovoltaic solar cells. More specifically, the invention relates to electroconductive pastes, precursors, processes for preparation of solar cells, solar cells and solar modules. The invention relates to an electro-conductive paste at least comprising as paste constituents: a) metallic particles; b) a glass; c) an organic vehicle; and d) an additive; wherein the glass comprises the following: i) Pb in the range from about 1 to about 94 wt. %; ii) Mo in the range from about 2 to about 30 wt. %; iii) O in the range from about 1 to about 50 wt. %; with the wt. % in each case being based on the total weight of the glass.
    Type: Application
    Filed: January 9, 2015
    Publication date: August 27, 2015
    Inventors: Devidas RASKAR, Xiao Chao SONG, Chi Long CHEN
  • Publication number: 20150243811
    Abstract: An electroconductive paste composition including metallic particles, glass frit including lead oxide, silicon dioxide, and silver or a silver-containing compound, and an organic vehicle is provided. The invention also provides a solar cell produced by applying the electroconductive paste according to the invention to a silicon wafer and firing the silicon wafer. The invention further provides a solar cell module comprising electrically interconnected solar cells according to the invention. The invention also provides a method of producing a solar cell, including the steps of providing a silicon wafer having a front surface and a back surface, applying an electroconductive paste according to the invention to the silicon wafer, and firing the silicon wafer.
    Type: Application
    Filed: January 27, 2015
    Publication date: August 27, 2015
    Inventors: Devidas Raskar, Xiao Chao Song, Chi Long Chen
  • Publication number: 20150243807
    Abstract: In general, the invention relates to electro-conductive pastes comprising a glass which comprises Tungsten and Lead as a constituent of a solar cell paste, and the use of such in the preparation of photovoltaic solar cells. More specifically, the invention relates to electroconductive pastes, precursors, processes for preparation of solar cells, solar cells and solar modules. The invention relates to a precursor at least comprising as precursor parts: i) a wafer; ii) an electro-conductive paste at least comprising as paste constituents: a) metallic particles; b) a glass; c) an organic vehicle; and d) an additive; wherein the glass comprises the following: i) Pb in the range from about 1 to about 96 wt. %; ii) W in the range from about 2 to about 30 wt. %; iii) O in the range from about 1 to about 50 wt. %; with the wt. % in each case being based on the total weight of the glass.
    Type: Application
    Filed: December 22, 2014
    Publication date: August 27, 2015
    Inventors: Devidas Raskar, Xiao Chao Song, Chi Long Chen
  • Publication number: 20150243809
    Abstract: An electroconductive paste composition including metallic particles, glass frit including lead oxide, silicon dioxide, and tungsten or a tungsten-containing compound, and an organic vehicle is provided. The invention also provides a solar cell produced by applying the electroconductive paste according to the invention to a silicon wafer and firing the silicon wafer. The invention further provides a solar cell module comprising electrically interconnected solar cells according to the invention. The invention also provides a method of producing a solar cell, including the steps of providing a silicon wafer having a front surface and a back surface, applying an electroconductive paste according to the invention to the silicon wafer, and firing the silicon wafer.
    Type: Application
    Filed: January 15, 2015
    Publication date: August 27, 2015
    Inventors: Devidas RASKAR, Xiao Chao SONG, Chi Long CHEN