Patents by Inventor Kalle Tuulos

Kalle Tuulos 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).

  • Battery charging
    Patent number: 6531845
    Abstract: A battery charging circuit is described in which power is derived from a communications port such as a USB interface (22) and is supplied to a rechargeable battery of a communications device. The communications device, which may be a mobile radio telephone, can be charged from the power supply or internal battery of a laptop computer equipped with a USB port and connected thereto with a suitable cable thereby avoiding the need for a user to carry a dedicated battery charger for the radio telephone.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: March 11, 2003
    Assignee: Nokia Mobile Phones Limited
    Inventors: Kanji Kerai, Kalle Tuulos
  • Battery charging
    Publication number: 20020005707
    Abstract: A battery charging circuit is described in which power is derived from a communications port such as a USB interface (22) and is supplied to a rechargeable battery of a communications device. The communications device, which may be a mobile radio telephone, can be charged from the power supply or internal battery of a laptop computer equipped with a USB port and connected thereto with a suitable cable thereby avoiding the need for a user to carry a dedicated battery charger for the radio telephone.
    Type: Application
    Filed: May 25, 2001
    Publication date: January 17, 2002
    Inventors: Kanji Kerai, Kalle Tuulos