Inventor · disambiguated record
Der-Chang Hsieh
Also filed as: HSIEH DER C · HSIEH DER-CHANG
14 granted patents·2 pending applications·212 citations·filing 1982–2005
93Inventor score
Top patents by PatentIndex Score
16 records- 0187US4432083AOptical memory system having track followingBURROUGHS CORP·Filed 1982·Granted Feb 14, 1984·31 cites·12 claims
- 0283US4432082AOptical memory system having a long seek capabilityBURROUGHS CORP·Filed 1982·Granted Feb 14, 1984·26 cites·21 claims
- 0380US4564757AMirror position sensor for improved track selection in optical data disk systemBURROUGHS CORP·Filed 1982·Granted Jan 14, 1986·35 cites·19 claims
- 0477US7071597B2Piezoelectric laminate motion sensing apparatus and methodLEE CHIH-KUNG·Filed 2005·Granted Jul 4, 2006·8 cites·25 claims
- 0577US4674076AOptical memory system having improved positioning and focusing control circuitryBURROUGHS CORP·Filed 1984·Granted Jun 16, 1987·20 cites·9 claims
- 0671US4489406AOptical memory system having a short seek capabilityBURROUGHS CORP·Filed 1982·Granted Dec 18, 1984·16 cites·8 claims
- 0766US4560925AMirror position sensor and associated pivot suspension for improved track selection in optical data disk systemBURROUGHS CORP·Filed 1982·Granted Dec 24, 1985·14 cites·18 claims
- 0866US4435797AOptical memory system having track following and seeking capabilitiesBURROUGHS CORP·Filed 1982·Granted Mar 6, 1984·13 cites·11 claims
- 0963US5043971AMethod and apparatus for pre-compensation in an optical discTANDY CORP·Filed 1989·Granted Aug 27, 1991·13 cites·20 claims
- 1062US4669074AFocusing control circuitry for an optical memory systemBURROUGHS CORP·Filed 1984·Granted May 26, 1987·11 cites·8 claims
- 1159US5056081ASystem and method for erasing light-responsive optical disksTANDY CORP·Filed 1990·Granted Oct 8, 1991·12 cites·26 claims
- 1252US6998759B2Piezoelectric laminate motion sensing apparatus and methodLEE CHIH-KUNG·Filed 2001·Granted Feb 14, 2006·3 cites·6 claims
- 1341US5128921AMethod and apparatus for pre-compensation in an optical discTANDY CORP·Filed 1991·Granted Jul 7, 1992·5 cites·21 claims
- 1440US6603242B2Piezoelectric transducer apparatus having independent gain and phase characteristics functions of the fourth-order partial differential equationsADVANCEWAVE TECHNOLOGY INC·Filed 2001·Granted Aug 5, 2003·5 cites·16 claims
- 1539US2002121846A1Piezoelectric transducer apparatus having independent gain and phase characteristics functionsFiled 2001·Application pending·0 cites
- 1638US2003222540A1Piezoelectric transducer apparatus having independent gain and phase characteristics functionsFiled 2002·Application pending·0 cites
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