Guo; Hengchang

Patent Applications and Registrations

Patent applications and USPTO patent grants for Guo; Hengchang.The latest application filed is for "sensing a prior head position by a motion pattern".

Company Profile

1.7.2

Guo; Hengchang - Rancho Santa Margarita CA
Guo; HengChang - Singapore SG

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Data storage device computing notch filters for multiple temperatures Grant 10,629,234 - Guo , et al.	2020-04-21
Polarity detection of piezoelectric actuator in disk drive Grant 8,797,664 - Guo , et al. August 5, 2	2014-08-05
Disk drive updating compensation values for multiple servo sectors based on PES generated for current servo sector Grant 8,743,503 - Tang , et al. June 3, 2	2014-06-03
Disk drive correcting track ID in response to an estimated radial location and a burst PES Grant 8,553,351 - Narayana , et al. October 8, 2	2013-10-08
Sensing a prior transducer position by a motion pattern Grant 7,295,395 - Koh , et al. November 13, 2	2007-11-13
Sensing a prior head position by a motion pattern App 20050201000 - Koh, ChoonHoe ; et al.	2005-09-15
Control object positioning using jerk, current and time optimized control profiles Grant 6,873,490 - Guo , et al. March 29, 2	2005-03-29
Control object positioning using jerk, current and time optimized control profiles App 20040070863 - Guo, HengChang ; et al.	2004-04-15

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