Patents by Inventor Jouw Van Den Akker

Jouw Van Den Akker 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).

  • Device for indicating the charge status of a battery
    Patent number: 4775827
    Abstract: A device for determining the charge status of a battery (4) when it is discharged by a load (R.sub.L) and/or when it is charged by a power-supply circuit (1) in which a value representing the nominal charging time and discharging time respectively is stored in first (10) and second adjusting means (11) respectively and is applied to computing means (12). In response to clock pulses applied to the computing means by a clock means (13), the computing means calculate the charge status of the battery by expressing the elapsed discharging or charging time as a fraction of the adjusted discharging time and charging time respectively. The computed charge status is indicated by indicator means (14). During discharging and charging an actual charge status is detected by first (7) and second (16) detection means.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: October 4, 1988
    Assignee: U.S. Philips Corporation
    Inventors: Johannes Ijntema, Jouw Van Den Akker, Jacob F. Verrij, Lambert J. H. Folmer, Teruo Hishiki