Patents by Inventor Stefan Pfrommer

Stefan Pfrommer 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: 10033048
    Abstract: The present invention concerns a flat battery comprising a package formed by a cathode, an anode, and a separator layer sandwiched between the cathode and the anode, a sealing frame extending circumferentially around said package, a first current collector contacting the anode, and a second current collector contacting the cathode. The first and second current collectors each partly cover the sealing frame in a zone being adjacent to the package. According to the invention, the battery further comprises a first polymeric jacket layer being arranged on the first current collector and a second polymeric jacket layer being arranged on the second current collector, said first and second polymeric jacket layers extending circumferentially beyond the current collectors and beyond the sealing frame and being sealed together to form an outer jacket for the battery. Furthermore, the present invention also concerns a method to produce such a battery.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: July 24, 2018
    Assignee: RENATA AG
    Inventors: Han Wu, Stefan Pfrommer
  • Patent number: 9287546
    Abstract: The present invention relates to a galvanic element, in particular an element of the button cell type, which has a long service life even when there are high mechanical or thermal loads. The element has a cathode, an anode, an electrolyte, a separator arranged between the anode and cathode, and a housing, which comprises a housing cup, a housing cover and a sealing element, the sealing element insulating the housing cup against the housing cover. According to the invention, the sealing element is rigidly connected to the separator.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: March 15, 2016
    Assignee: Renata AG
    Inventors: Stefan Pfrommer, Ulrich Ockenfuss, Pascal Haering, Dirk Jansen
  • Publication number: 20110189528
    Abstract: The present invention concerns a flat battery comprising a package formed by a cathode, an anode, and a separator layer sandwiched between the cathode and the anode, a sealing frame extending circumferentially around said package, a first current collector contacting the anode, and a second current collector contacting the cathode. The first and second current collectors each partly cover the sealing frame in a zone being adjacent to the package. According to the invention, the battery further comprises a first polymeric jacket layer being arranged on the first current collector and a second polymeric jacket layer being arranged on the second current collector, said first and second polymeric jacket layers extending circumferentially beyond the current collectors and beyond the sealing frame and being sealed together to form an outer jacket for the battery. Furthermore, the present invention also concerns a method to produce such a battery.
    Type: Application
    Filed: September 5, 2008
    Publication date: August 4, 2011
    Applicant: RENATA AG
    Inventors: Han Wu, Stefan Pfrommer
  • Publication number: 20100183912
    Abstract: The present invention relates to a galvanic element, in particular an element of the button cell type, which has a long service life even when there are high mechanical or thermal loads. The element has a cathode, an anode, an electrolyte, a separator arranged between the anode and cathode, and a housing, which comprises a housing cup, a housing cover and a sealing element, the sealing element insulating the housing cup against the housing cover. According to the invention, the sealing element is rigidly connected to the separator.
    Type: Application
    Filed: January 15, 2010
    Publication date: July 22, 2010
    Applicant: RENATA AG
    Inventors: Stefan Pfrommer, Ulrich Ockenfuss, Pascal Haering, Dirk Jansen