Patents by Inventor Srikanth Pilla

Srikanth Pilla 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: 11840454
    Abstract: Methods for synthesis of high surface area porous silicon-based materials and structures that can be formed according to the methods are described. Methods are scalable and capable of producing large quantities of the high surface area materials with high efficiency. The high surface area products can be in the form of a 3D network of interconnected arms or quills with multimodal porosity including high level pores between and among arms, hollow cores of the arms of the network, and pores through the walls of the arms of the network.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: December 12, 2023
    Assignee: CLEMSON UNIVERSITY
    Inventors: Srikanth Pilla, Morteza Sabet, Apparao M. Rao, Nancy Chen
  • Publication number: 20230340200
    Abstract: Bio-based polymer precursors and non-isocyanate polyurethanes (NIPU) and non-isocyanate polyurethane foams (NIPUF) that can be formed from the precursors, as well as methods for the synthesis of the precursors and the polyurethane products are described. The bio-based polymer precursors are formed through functionalization of a bio-based polyol, e.g., lignin, with cyclic carbonates. The bio-based polyol starting materials need not be pre-processed and can include Kraft lignin. NIPU/NIPUF can be synthesized through a ring opening curing reaction of cyclic carbonates of the bio-based polyol precursor with diamines. The carbonates and diamines can include non-toxic bio-based carbonates.
    Type: Application
    Filed: June 3, 2021
    Publication date: October 26, 2023
    Inventors: SRIKANTH PILLA, JAMES SCOTT STERNBERG
  • Patent number: 11745399
    Abstract: This system and method provide for manufacturing a multi-material hybrid structure comprising a single- or multi-layer sheet or tube, which are made of metals, fabrics, polymer and their combinations, and at least one layer or body made of formed resin. The methods include a simultaneous forming-injection process that followed with an additional sequence to initiate the forming process along with curing and/or solidification and/or bonding processes. The additional sequence provides a pressure drop inside the cavity using tool movement and or additional deformation of one/or several layers of the sheet using any fluid pressure, suction and/or electromagnetic force. The injection process can be used for any kind of synthetic or bio-based resin with or without fiber reinforcement. It is also integrated with supercritical assisted technology.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: September 5, 2023
    Assignee: Clemson University
    Inventors: Srikanth Pilla, Saeed Farahani
  • Publication number: 20230107676
    Abstract: In general, the present disclosure is directed to a soyhull-based activated carbon. The soyhull-based activated carbon comprises a Brunauer-Emmett-Teller (BET) surface area of from about 750 m2/g to about 2900 m2/g and a micropore volume of from about 0.50 cm3/g to about 1.2 cm3/g.
    Type: Application
    Filed: October 6, 2022
    Publication date: April 6, 2023
    Inventors: SRIKANTH PILLA, JAMES SCOTT STERNBERG, TANJU KARANFIL, ESAT ARITURK
  • Publication number: 20220153597
    Abstract: Methods for synthesis of high surface area porous silicon-based materials and structures that can be formed according to the methods are described. Methods are scalable and capable of producing large quantities of the high surface area materials with high efficiency. The high surface area products can be in the form of a 3D network of interconnected arms or quills with multimodal porosity including high level pores between and among arms, hollow cores of the arms of the network, and pores through the walls of the arms of the network.
    Type: Application
    Filed: November 12, 2021
    Publication date: May 19, 2022
    Inventors: SRIKANTH PILLA, MORTEZA SABET, APPARAO M. RAO, NANCY CHEN
  • Publication number: 20220017696
    Abstract: Disclosed are bio-based poly(urethane amide) polymers and methods for forming the polymers. The bio-based polymers can be synthesized through a ring opening reaction between bio-based cyclocarbonated polymers that include aromatic and/or cyclic functionality within the polymer and oligomeric polyamides. The cyclocarbonated polymers can be based on bio-based polyols, e.g., lignin or lignin-based polyols, and/or other aromatic or cyclic bio-based polyols. The oligomeric polyamides can be formed by reaction of one or more diamines, which can include bio-based diamines, and one or more dicarboxylic acids, which can include bio-based dicarboxylic acids.
    Type: Application
    Filed: July 20, 2021
    Publication date: January 20, 2022
    Inventors: SRIKANTH PILLA, JAMES SCOTT STERNBERG
  • Publication number: 20210101322
    Abstract: This system and method provide for manufacturing a multi-material hybrid structure comprising a single- or multi-layer sheet or tube, which are made of metals, fabrics, polymer and their combinations, and at least one layer or body made of formed resin. The methods include a simultaneous forming-injection process that followed with an additional sequence to initiate the forming process along with curing and/or solidification and/or bonding processes. The additional sequence provides a pressure drop inside the cavity using tool movement and or additional deformation of one/or several layers of the sheet using any fluid pressure, suction and/or electromagnetic force. The injection process can be used for any kind of synthetic or bio-based resin with or without fiber reinforcement. It is also integrated with supercritical assisted technology.
    Type: Application
    Filed: October 7, 2020
    Publication date: April 8, 2021
    Applicant: Clemson University
    Inventors: Srikanth Pilla, Saeed Farahani
  • Publication number: 20090205152
    Abstract: A cleaning implement is disclosed which is of the all-in-one type. It has a substrate that delivers impregnated cleaning liquid to the window being cleaned, a squeegee blade to drive used cleaning liquid off the window, and an absorbent region of the substrate to collect the used liquid. In some embodiments a single block of substrate can provide the applicator, scrubbing, and collecting functions, as well as filter and reprocess used cleaning liquid for further use. Refill structures are provided to permit insertion of the refill in varied directions, to facilitate insertion and removal of the refill, to increase the abrasive character of the refill, to minimize drooling, and to otherwise optimize cleaning properties of the refill.
    Type: Application
    Filed: March 22, 2007
    Publication date: August 20, 2009
    Inventors: Douglas A. Soller, Jose de Jesus Castillo Higareda, Steven A. Zach, Padma Prabodh Varanasi, Srikanth Pilla, Jose Porchia, Jacqueline V. Lepow, Garsen Lee Yap, Jason C. Billig, Stuart M. Leslie, Charles A. Curtiss