Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9952078 | Upstream volume mass flow verification systems and methods | Junhua Ding | 2018-04-24 |
| 8793082 | Upstream volume mass flow verification systems and methods | Junhua Ding | 2014-07-29 |
| 7891228 | Dual-mode mass flow verification and mass flow delivery system and method | Junhua Ding | 2011-02-22 |
| 7757554 | High accuracy mass flow verifier with multiple inlets | Junhua Ding | 2010-07-20 |
| 7706925 | Integrated pressure and flow ratio control system | Junhua Ding, Michael L'Bassi, William R. Clark | 2010-04-27 |
| 7673645 | Gas delivery method and system including a flow ratio controller using a multiple antisymmetric optimal control arrangement | Junhua Ding | 2010-03-09 |
| 7621290 | Gas delivery method and system including a flow ratio controller using antisymmetric optimal control | Junhua Ding, John A. Smith | 2009-11-24 |
| 7474968 | Critical flow based mass flow verifier | Junhua Ding, Ali Shajii, Daniel Smith | 2009-01-06 |
| 7467027 | Compensation for thermal siphoning in mass flow controllers | Junhua Ding, Michael L'Bassi | 2008-12-16 |
| 7461549 | Mass flow verifiers capable of providing different volumes, and related methods | Junhua Ding | 2008-12-09 |
| 7296465 | Vertical mount mass flow sensor | Junhua Ding, Michael L'Bassi | 2007-11-20 |
| 6955072 | System and method for in-situ flow verification and calibration | Michael L'Bassi, Mark J. Quaratiello | 2005-10-18 |