Patents by Inventor Karl Ludger Neumann

Karl Ludger Neumann 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).

  • Electric double layer capacitor
    Patent number: 5754393
    Abstract: An electric double layer capacitor which includes a polarization electrode and an electrolyte capable of forming an electric double layer on the surface of the polarization electrode, wherein the solvent in the electrolyte is an organic type mixed solvent containing sulfolane or a sulfolane derivative, and a chain carbonic acid ester represented by the general formula R.sup.1 O(CO)OR.sup.2 (wherein R.sup.1 and R.sup.2, which may be the same or different, are monovalent organic groups).
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: May 19, 1998
    Assignee: Asahi Glass Company Ltd.
    Inventors: Kazuya Hiratsuka, Takeshi Kawasato, Manabu Suhara, Katsuji Ikeda, Karl Ludger Neumann, Takeshi Morimoto