Patents by Inventor Deepa Madan

Deepa Madan 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: 20240318024
    Abstract: An energy-efficient method of controlling the composite microstructure and resulting thermoelectric (TE) properties of TE composite films. The TE composite films, which include a small amount of naturally occurring chitosan binder that is sufficient to hold TE particles together, are modified by applying uniaxial mechanical pressure at low temperatures for a short duration. The TE composite films have high electrical conductivity and low thermal conductivity, making them ideal for use into high-performance energy harvesting thermoelectric devices.
    Type: Application
    Filed: May 30, 2024
    Publication date: September 26, 2024
    Inventors: Deepa MADAN, Priyanshu BANERJEE, Jiyuan HUANG
  • Patent number: 12037498
    Abstract: An energy-efficient method of controlling the composite microstructure and resulting thermoelectric (TE) properties of TE composite films. The TE composite films, which include a small amount of naturally occurring chitosan binder that is sufficient to hold TE particles together, are modified by applying uniaxial mechanical pressure at low temperatures for a short duration. The TE composite films have high electrical conductivity and low thermal conductivity, making them ideal for use into high-performance energy harvesting thermoelectric devices.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: July 16, 2024
    Assignee: UNIVERSITY OF MARYLAND, BALTIMORE COUNTY
    Inventors: Deepa Madan, Priyanshu Banerjee, Jiyuan Huang
  • Publication number: 20240154163
    Abstract: Zinc electrolytic manganese dioxide (EMD) batteries including a high performing flexible chitosan-based gel electrolyte with poly-vinyl alcohol (PVA) and potassium hydroxide (KOH) additives were prepared. The Zn-EMD batteries were constructed using an optimized assembly technique employed to achieve good interfacial contact between the layers. Attaining energy densities between 150-250 Wh/kg (w.r.t cathode mass) is possible for these batteries, encouraging their use in wearable or flexible electronics. Using the chitosan-based gel electrolyte and limited voltage window testing, the prepared Zn-EMD alkaline batteries are among the best reported polymer-based alkaline electrolyte Zn rechargeable batteries.
    Type: Application
    Filed: November 29, 2023
    Publication date: May 9, 2024
    Inventors: Deepa MADAN, Aswani Poosapati
  • Patent number: 11870034
    Abstract: Zinc electrolytic manganese dioxide (EMD) batteries including a high performing flexible chitosan-based gel electrolyte with poly-vinyl alcohol (PVA) and potassium hydroxide (KOH) additives were prepared. The Zn-EMD batteries were constructed using an optimized assembly technique employed to achieve good interfacial contact between the layers. Attaining energy densities between 150-250 Wh/kg (w.r.t cathode mass) is possible for these batteries, encouraging their use in wearable or flexible electronics. Using the chitosan-based gel electrolyte and limited voltage window testing, the prepared Zn-EMD alkaline batteries are among the best reported polymer-based alkaline electrolyte Zn rechargeable batteries.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: January 9, 2024
    Assignee: University of Maryland, Baltimore County
    Inventors: Deepa Madan, Aswani Poosapati
  • Publication number: 20220411656
    Abstract: An energy-efficient method of controlling the composite microstructure and resulting thermoelectric (TE) properties of TE composite films. The TE composite films, which include a small amount of naturally occurring chitosan binder that is sufficient to hold TE particles together, are modified by applying uniaxial mechanical pressure at low temperatures for a short duration. The TE composite films have high electrical conductivity and low thermal conductivity, making them ideal for use into high-performance energy harvesting thermoelectric devices.
    Type: Application
    Filed: March 29, 2022
    Publication date: December 29, 2022
    Inventors: Deepa MADAN, Priyanshu BANERJEE, Jiyuan HUANG
  • Publication number: 20220131187
    Abstract: Zinc electrolytic manganese dioxide (EMD) batteries including a high performing flexible chitosan-based gel electrolyte with poly-vinyl alcohol (PVA) and potassium hydroxide (KOH) additives were prepared. The Zn-EMD batteries were constructed using an optimized assembly technique employed to achieve good interfacial contact between the layers. Attaining energy densities between 150-250 Wh/kg (w.r.t cathode mass) is possible for these batteries, encouraging their use in wearable or flexible electronics. Using the chitosan-based gel electrolyte and limited voltage window testing, the prepared Zn-EMD alkaline batteries are among the best reported polymer-based alkaline electrolyte Zn rechargeable batteries.
    Type: Application
    Filed: October 22, 2021
    Publication date: April 28, 2022
    Inventors: Deepa MADAN, Aswani POOSAPATI
  • Publication number: 20160172570
    Abstract: A p-type thermoelectric composite and composite slurries for printing low cost and scalable thermoelectric generator (TEG) devices is presented. The mechanically alloyed Bi0.5Sb1.5Te3 p-type composite may be enhanced with a ZT additive and a polymer binder. An additive of 2 wt. % to 10 wt. % Tellurium to the composite increased the Seebeck coefficient by approximately 50%. Epoxy is a suitable polymer binder that provides good adhesion strength with minimal curing shrinkage and high mass loading of active filler particles. Different n-type thermoelectric compositions can be used in conjunction with the p-type compositions. Devices with mechanically alloyed Bi0.5Sb1.5Te3 p-type composites doped with 8 wt. % Te on a flexible wired substrate and n-type Bi-epoxy elements were demonstrated. Potential uses of the devices include power sources for ultra low power needs such as wireless sensor network devices, Peltiers, and thermoelectric coolers.
    Type: Application
    Filed: December 11, 2015
    Publication date: June 16, 2016
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Paul K. Wright, James W. Evans, Deepa Madan, Alic Chen