Inventor · disambiguated record
Wenfa Qi
Also filed as: QI WENFA
4 granted patents·16 citations·filing 2006–2011
70Inventor score
Top patents by PatentIndex Score
4 records- 0178US8107129B2Methods and apparatus for embedding and detecting digital watermarks in a text documentYANG BIN·Filed 2006·Granted Jan 31, 2012·7 cites·23 claims
- 0267US8120795B2Method of document protectionQI WENFA·Filed 2006·Granted Feb 21, 2012·5 cites·23 claims
- 0365US8976383B2Method and system for document printing management and control, and document source trackingQI WENFA·Filed 2011·Granted Mar 10, 2015·3 cites·16 claims
- 0448US9111341B2Watermarking image block division method and device for western language watermarking processingWANG GAOYANG·Filed 2011·Granted Aug 18, 2015·1 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →