Patents by Inventor Willy Mueller

Willy Mueller 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: 4055559
    Abstract: A disazo pigment of the formula ##STR1## WHEREIN X and Y are hydrogen, chlorine, alkyl of 1 - 4 C-atoms or one of X and Y can be alkoxy of 1 - 4 C-atoms and Z is chlorine or methyl, which is useful for pigmenting high molecular organic material and shows excellent fastness to light and weather.
    Type: Grant
    Filed: October 8, 1975
    Date of Patent: October 25, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Georg Cseh, Willy Mueller
  • Patent number: 4037053
    Abstract: An automatic telephone answering apparatus having an announcement mechanism for playing an announcement message to a caller in response to a signal being received from the public telephone network indicating that the caller wishes to call the number to which the automatic telephone answering device is connected. The automatic telephone answering device has a housing containing circuitry for controlling the announcement text. The housing also has an empty space to receive a hand-operated dictating machine, which dictating machine has a tape mechanism therein for recording a message from the caller. Circuits are provided for controlling and sequencing the operation of the announcement text and the time period during which the caller can record information on the tape in the dictating machine.
    Type: Grant
    Filed: August 15, 1975
    Date of Patent: July 19, 1977
    Assignee: Compur-Werk Gesellschaft mit beschrankter Haftung & Co.
    Inventor: Willy Mueller