Patents by Inventor Roland Thomas Wilhelm Johansson

Roland Thomas Wilhelm Johansson 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: 5845217
    Abstract: A system for supplying primary electrical power to modular components of electronic equipment. The system uses a battery power source mounted either in the module or as part of a battery pack that attaches to the module. Module circuitry supplies a recharge current to the battery power source. A charge circuit charges the batteries in a parallel and supplies power to the module by connecting the batteries in series. Circuitry also determines the amount of battery power source used for an operation of the module and sends a recharge current to the battery power source corresponding to the power consumed by the module and based on the available recharge current.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: December 1, 1998
    Assignee: Ericsson Inc.
    Inventors: Bo Karl Lindell, Roland Thomas Wilhelm Johansson