Inventor · disambiguated record
Hengchang Guo
Also filed as: GUO HENGCHANG
6 granted patents·2 pending applications·313 citations·filing 2003–2024
86Inventor score
Files withWESTERN DIGITAL TECH INC3BEIJING VOLCANO ENGINE TECHNOLOGY CO LTD2SEAGATE TECHNOLOGY LLC2NARAYANA ASWARTHA1
Top patents by PatentIndex Score
8 records- 0195US8797664B1Polarity detection of piezoelectric actuator in disk driveWESTERN DIGITAL TECH INC·Filed 2012·Granted Aug 5, 2014·77 cites·20 claims
- 0294US8743503B1Disk drive updating compensation values for multiple servo sectors based on PES generated for current servo sectorWESTERN DIGITAL TECH INC·Filed 2013·Granted Jun 3, 2014·99 cites·26 claims
- 0394US8553351B1Disk drive correcting track ID in response to an estimated radial location and a burst PESNARAYANA ASWARTHA·Filed 2011·Granted Oct 8, 2013·107 cites·8 claims
- 0480US6873490B2Control object positioning using jerk, current and time optimized control profilesSEAGATE TECHNOLOGY LLC·Filed 2003·Granted Mar 29, 2005·19 cites·25 claims
- 0577US10629234B1Data storage device computing notch filters for multiple temperaturesWESTERN DIGITAL TECH INC·Filed 2019·Granted Apr 21, 2020·3 cites·17 claims
- 0667US7295395B2Sensing a prior transducer position by a motion patternSEAGATE TECHNOLOGY LLC·Filed 2004·Granted Nov 13, 2007·8 cites·25 claims
- 0759US2024394827A1Method, apparatus, device and storage medium for watermark embedding and extractionBEIJING VOLCANO ENGINE TECHNOLOGY CO LTD·Filed 2024·Application pending·0 cites
- 0855US2024378692A1Method for watermark extraction, computer device and storage mediumBEIJING VOLCANO ENGINE TECHNOLOGY CO LTD·Filed 2024·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →