Patents by Inventor Dirk Michalzik

Dirk Michalzik 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: 5960332
    Abstract: The invention relates to a handset for a radio telephone system, having a front housing shell (2) and a rear housing shell (1) which can be connected thereto. The handset has in its interior a locking device (22, 23) which, in a locking position, locks the housing shells (1, 2) to one another and, in an unlocking position, releases the locking. In addition, the handset also contains in its interior a blocking device (30, 32) which prevents the locking device changing over automatically from the locking position into the unlocking position. Activation of the blocking device (30, 32) is possible only in a way which is as a rule difficult to discover.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: September 28, 1999
    Assignee: Nokia Mobile Phones Limited
    Inventor: Dirk Michalzik
  • Patent number: 5946637
    Abstract: An inventive device (1) for cordless telephones (4), with which a base station (2) and at least one charging station (3) are associated in order to charge a battery of a cordless telephone (4) via the charging station (3) when the cordless telephone (4) is located in the charging station (3), is characterized by a mechanical connecting device (10, 11, 14, 17) for detachably connecting the charging station (3) and base station (2) to one another. As a result, more flexible possibilities of use for the charging station (3) are obtained.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: August 31, 1999
    Assignee: Nokia Mobile Phones Limited
    Inventors: Dirk Umbach, Dirk Michalzik, Rainer Weber