Inventor · disambiguated record
Henry S. Landgraf
Also filed as: LANDGRAF HENRY S · LANDGRAF HENRY SEBASTIAN
4 granted patents·67 citations·filing 1993–1999
75Inventor score
Technology areasH04N
Top patents by PatentIndex Score
4 records- 0168US6154633AMethod and apparatus for upgrading features and functions of a set top box in the fieldMOTOROLA INC·Filed 1997·Granted Nov 28, 2000·52 cites·13 claims
- 0236US6707917B1Monaural and stereo audio signal control systemGEN INSTRUMENT CORP·Filed 1999·Granted Mar 16, 2004·7 cites·21 claims
- 0334US5644637AMethod and apparatus for recovering synchronizing signals in scrambled television picturesGEN INSTRUMENT CORP·Filed 1995·Granted Jul 1, 1997·6 cites·12 claims
- 0429US5287409AMethod and apparatus for frustrating vertical interval detection in scrambled television signalsGEN INSTRUMENT CORP·Filed 1993·Granted Feb 15, 1994·2 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →