Inventor
FRAENNHAGEN BJOERN
SE4 patents
Patents
4 patentsUS5945804AAug 31, 1999
Method and device for controlling the voltage across individual cells in a battery
ERICSSON TELEFON AB L M25 citations91
US6025694AFeb 15, 2000
Battery pack for a portable electric apparatus and a method for the charging thereof
ERICSSON TELEFON AB L M31 citations90
US6049144AApr 11, 2000
Rechargeable battery with a built-in safety circuit for a portable electric apparatus
ERICSSON TELEFON AB L M19 citations81
US5834921ANov 10, 1998
Safety device for a portable battery-powered electric apparatus
ERICSSON TELEFON AB L M13 citations71