Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12264950 | Method and apparatus for mass flow verification | Junhua Ding | 2025-04-01 |
| 11513542 | Method and apparatus for pulse gas delivery using an external pressure trigger | Mark J. Quaratiello, Junhua Ding | 2022-11-29 |
| 11404290 | Method and apparatus for pulse gas delivery | Junhua Ding | 2022-08-02 |
| 10969799 | System for and method of fast pulse gas delivery | Junhua Ding, Tseng-Chung Lee | 2021-04-06 |
| 10725484 | Method and apparatus for pulse gas delivery using an external pressure trigger | Mark J. Quaratiello, Junhua Ding | 2020-07-28 |
| 10698426 | Methods and apparatus for multiple channel mass flow and ratio control systems | Junhua Ding, Wayne Cole | 2020-06-30 |
| 10649471 | Method and apparatus for pulse gas delivery with isolation valves | Junhua Ding, Gordon Hill | 2020-05-12 |
| 10514712 | Method and apparatus for pressure-based flow measurement in non-critical flow conditions | Junhua Ding | 2019-12-24 |
| 10353408 | System for and method of fast pulse gas delivery | Junhua Ding, Tseng-Chung Lee | 2019-07-16 |
| 10126760 | System for and method of fast pulse gas delivery | Junhua Ding, Tseng-Chung Lee | 2018-11-13 |
| 10031004 | Methods and apparatus for wide range mass flow verification | Junhua Ding, Wayne Cole | 2018-07-24 |
| 9471066 | System for and method of providing pressure insensitive self verifying mass flow controller | Junhua Ding | 2016-10-18 |
| 8997791 | Multiple-channel flow ratio controller | Junhua Ding, David D'Entremont | 2015-04-07 |
| 7706925 | Integrated pressure and flow ratio control system | Junhua Ding, Kaveh Zarkar, William R. Clark | 2010-04-27 |
| 7467027 | Compensation for thermal siphoning in mass flow controllers | Junhua Ding, Kaveh Zarkar | 2008-12-16 |
| 7296465 | Vertical mount mass flow sensor | Junhua Ding, Kaveh Zarkar | 2007-11-20 |
| 7000465 | Attitude error self-correction for thermal sensors of mass flow meters and controllers | Mark J. Quaratiello, Ronald H. Bouley | 2006-02-21 |
| 6955072 | System and method for in-situ flow verification and calibration | Kaveh Zarkar, Mark J. Quaratiello | 2005-10-18 |