Patents by Inventor Ratheesh RAVENDRAN

Ratheesh RAVENDRAN 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: 20240002978
    Abstract: The present disclosure relates to a method for the recovery of metals and metal alloys from waste Lithium-ion batteries. The method of the present disclosure uses a smelting process that is energy-efficient, cost-effective and requires comparatively reduced time. Further, the method of the present disclosure has a high metal extraction efficiency. Furthermore, the heat treatment of the residual particulate matter results in the formation of binary Co—Ni alloy and prevents the formation of Co—Ni—Mn ternary alloy during smelting.
    Type: Application
    Filed: June 23, 2023
    Publication date: January 4, 2024
    Inventors: Rajesh Kumar Sivasankaran NAIR, Ajay KAUSHAL, Amit BARNWAL, Sandip CHATTERJEE, Ratheesh RAVENDRAN
  • Publication number: 20230391632
    Abstract: The present disclosure relates to a method for recovery of metal oxides/carbonates from assorted waste Li-ion batteries. The method uses less solvent and has a high extraction efficiency. Further, the method requires comparatively lesser extraction time to extract metals. Furthermore, the method of the present disclosure is cost-effective.
    Type: Application
    Filed: June 1, 2023
    Publication date: December 7, 2023
    Inventors: Ajay KAUSHAL, Amit BARNWAL, Rajesh Kumar Siva Sankaran NAIR, Ratheesh RAVENDRAN, Sandip CHATTERJEE
  • Patent number: 9505902
    Abstract: The present disclosure relates to ceramic fillers and methods for preparing said ceramic fillers. The present disclosure further relates to dielectric resonator, fluoropolymer-ceramic filler compositions and their corresponding laminates along with their respective methods for preparing the same from the ceramic fillers. The present disclosure further provides a dielectric resonator and fluoropolymer-ceramic filler laminates having enhanced dielectric properties. The present disclosure also relates to various microwave applications of such fillers, resonators and laminates including microwave devices and circuits.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: November 29, 2016
    Assignees: SECRETARY, DEPARTMENT OF ELECTRONICS AND INFORMATION TECHNOLOGY, GOVT OF INDIA, EXECUTIVE DIRECTOR, CENTRE FOR MATERIALS FOR ELECTRONICS TECHNOLOGY (C-MET), SECRETARY, DEPARTMENT OF ATOMIC ENERGY
    Inventors: Ratheesh Ravendran, Stanley Jacob Kollannoor, Kodakattumana Purushothaman Murali, Akhilesh Jain, Pundlik Rama Hannurkar
  • Patent number: 9455064
    Abstract: Circuits characterized by plural conductive paths supported on a non-conductive substrate are provided. Ceramic filler compositions and methods for preparing the ceramic filler compositions are also provided. Further, fluoropolymer-ceramic filler compositions and their laminates along with their respective methods for their preparation are provided. The fluoropolymer-ceramic filler compositions provide for excellent properties for dielectric constant, loss tangent and temperature coefficient of dielectric constant. In addition, electrical substrate materials having a conductive outer layer supported on a thin sheet of insulating material are also provided.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: September 27, 2016
    Assignees: Centre for Materials for Electronics Technology (C-MET), The Secretary, Dept. of Electronics and IT, Govt. of India
    Inventors: Rajesh Surendran, Murali Kodakkattumana Purushothaman, Ratheesh Ravendran
  • Publication number: 20150274926
    Abstract: The present disclosure relates to ceramic fillers and methods for preparing said ceramic fillers. The present disclosure further relates to dielectric resonator, fluoropolymer-ceramic filler compositions and their corresponding laminates along with their respective methods for preparing the same from the ceramic fillers. The present disclosure further provides a dielectric resonator and fluoropolymer-ceramic filler laminates having enhanced dielectric properties. The present disclosure also relates to various microwave applications of such fillers, resonators and laminates including microwave devices and circuits.
    Type: Application
    Filed: March 28, 2014
    Publication date: October 1, 2015
    Applicants: SECRETARY, DEPARTMENT OF ELECTRONICS AND INFORMATION TECHNOLOGY, GOVT OF INDIA, SECRETARY, DEPARTMENT OF ATOMIC ENERGY, EXECUTIVE DIRECTOR, CENTRE FOR MATERIALS FOR ELECTRONICS TECHNOLOGY (C-MET)
    Inventors: Ratheesh RAVENDRAN, Stanley Jacob KOLLANNOOR, Kodakattumana Purushothaman MURALI, Akhilesh JAIN, Pundlik Rama HANNURKAR
  • Publication number: 20140162065
    Abstract: The present disclosure is in the field of electrical circuits and particularly to circuits characterized by plural conductive paths supported on a non-conductive substrate. The disclosure relates to ceramic filler compositions and methods for preparing said compositions. Further, the present disclosure discloses fluoropolymer-ceramic filler compositions and their laminates along with their respective methods for preparing the same. Said fluoropolymer-ceramic filler compositions provide for excellent properties for dielectric constant, loss tangent and temperature coefficient of dielectric constant. In addition, electrical substrate materials comprising of a conductive outer layer supported on a thin sheet of insulating material is also disclosed.
    Type: Application
    Filed: December 12, 2013
    Publication date: June 12, 2014
    Applicants: Centre for Materials for Electronics Technology (C-MET), The Secretary, Dept. of Electronics and IT, Govt. of India
    Inventors: Rajesh SURENDRAN, Murali Kodakkattumana PURUSHOTHAMAN, Ratheesh RAVENDRAN