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Bjorn Frannhagen
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Lund, SE
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last 30 patents
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Patent Grant
Rechargeable battery with a built-in safety circuit for a portable...
Patent number
6,049,144
Issue date
Apr 11, 2000
Telefonaktiebolaget LM Ericsson
Bjorn Frannhagen
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Battery pack for a portable electric apparatus and a method for the...
Patent number
6,025,694
Issue date
Feb 15, 2000
Telefonaktiebolaget LM Ericsson
Johan Mercke
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Battery pack that communicates intrinsic information over battery v...
Patent number
5,990,659
Issue date
Nov 23, 1999
Telefonaktiebolaget LM Ericsson
Bjorn G. Frannhagen
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Method and device for controlling the voltage across individual cel...
Patent number
5,945,804
Issue date
Aug 31, 1999
Telefonaktiebolaget LM Ericsson
Magnus Hansson
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Safety device for a portable battery-powered electric apparatus
Patent number
5,834,921
Issue date
Nov 10, 1998
Telefonaktiebolaget LM Ericsson
Johan Mercke
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Battery charging methods and apparatuses
Patent number
5,818,204
Issue date
Oct 6, 1998
Ericsson Inc.
Timothy Banyas
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER