Charles E. Harm — 3 Patents at AT&T

Charles E. Harm has been granted 3 US patents while listed as an inventor at AT&T. The first was granted in 1991 and the most recent in May 1993. Charles E. Harm ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Charles E. Harm in Dallas, TX, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5214370	Battery charger with thermal runaway protection	Kenneth J. Timm	1993-05-25
5138543	Output voltage estimating circuit for a power converter having galvanic isolation between input and output circuits	George Knoedl, Jr., William A. Nitz	1992-08-11
5051880	Mixed mode regulation controller for a resonant power converter	Kenneth J. Timm	1991-09-24

Charles E. Harm — 3 Patents

Issued Patents All Time

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