Patents by Inventor Gerhard Sessler

Gerhard Sessler 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).

  • Push-pull electret transducer with controlled restoring force for low frequency microphones and energy harvesting
    Patent number: 11228844
    Abstract: Provided is an energy harvesting system, including: a first electrode; a second electrode; a non-metalized mono-charged electret diaphragm disposed between the first and second electrodes; a base; a spring extending between the base and the electret diaphragm; and a rod in communication with the electret diaphragm and for manipulating a position of the electret diaphragm relative to the first and second electrodes.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: January 18, 2022
    Assignee: THE JOHNS HOPKINS UNIVERSITY
    Inventors: James E. West, Kailang Ren, Adebayo Eisape, Gerhard Sessler, Ugur Erturun
  • PUSH-PULL ELECTRET TRANSDUCER WITH CONTROLLED RESTORING FORCE FOR LOW FREQUENCY MICROPHONES AND ENERGY HARVESTING
    Publication number: 20200178001
    Abstract: Provided is an energy harvesting system, including: a first electrode; a second electrode; a non-metalized mono-charged electret diaphragm disposed between the first and second electrodes; a base; a spring extending between the base and the electret diaphragm; and a rod in communication with the electret diaphragm and for manipulating a position of the electret diaphragm relative to the first and second electrodes.
    Type: Application
    Filed: May 18, 2018
    Publication date: June 4, 2020
    Inventors: James E. WEST, Kailang REN, Adebayo EISAPE, Gerhard SESSLER, Ugur ERTURUN
  • Electrets
    Patent number: 6489033
    Abstract: Electrets can be produced from cycloolefin copolymers (COCs), and charges applied thereto are stable for long periods, even at high temperatures and high relative humidities. The reduction here in a positive charge applied to the COCs is smaller than that of negative charges applied to the COCs. The stability over time of the charges applied is impaired by adding polar additives, such as inorganic silicon compounds. Films, fibers or nonwovens produced from electrets can be processed to give filters.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: December 3, 2002
    Assignee: Ticona GmbH
    Inventors: Wilfried Hatke, Gerhard Sessler, Guo-Mao Yang