Inventor · disambiguated record
Dao-Hong Zheng
Also filed as: ZHENG DAO-HONG
7 granted patents·2 pending applications·325 citations·filing 1993–2002
89Inventor score
Files withAIR PROD & CHEM7
Top patents by PatentIndex Score
9 records- 0194US6314986B1Gas control device and method of supplying gasAIR PROD & CHEM·Filed 1998·Granted Nov 13, 2001·77 cites·35 claims
- 0292US5409526AApparatus for supplying high purity fluidAIR PROD & CHEM·Filed 1993·Granted Apr 25, 1995·124 cites·5 claims
- 0387US6648021B2Gas control device and method of supplying gasAIR PROD & CHEM·Filed 2002·Granted Nov 18, 2003·30 cites·30 claims
- 0486US7013916B1Sub-atmospheric gas delivery method and apparatusAIR PROD & CHEM·Filed 2000·Granted Mar 21, 2006·44 cites·39 claims
- 0577US6527009B2Gas control device and method of supplying gasAIR PROD & CHEM·Filed 2001·Granted Mar 4, 2003·19 cites·11 claims
- 0667US6572688B2Gas purification unitAIR PROD & CHEM·Filed 2002·Granted Jun 3, 2003·17 cites·14 claims
- 0745US6085548AControl vent system for ultra-high purity delivery system for liquefied compressed gasesAIR PROD & CHEM·Filed 1998·Granted Jul 11, 2000·14 cites·17 claims
- 0839US2001039961A1Gas control device and method of supplying gasFiled 2001·Application pending·0 cites
- 0937US2001029979A1Gas control device and method of supplying gasFiled 2001·Application pending·0 cites
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