Junhua Ding
46Patents
11h-index
18Co-inventors
68Inventor score
Filing activity: Apr 21, 2005 → Jan 19, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7891228B2 | Dual-mode mass flow verification and mass flow delivery system and method | Physics | 54 | Active |
| US7474968B2 | Critical flow based mass flow verifier | Physics | 48 | Active |
| US7467027B2 | Compensation for thermal siphoning in mass flow controllers | Physics | 23 | Active |
| US8793082B2 | Upstream volume mass flow verification systems and methods | Physics | 21 | Active |
| US7706925B2 | Integrated pressure and flow ratio control system | Physics | 19 | Active |
| US7673645B2 | Gas delivery method and system including a flow ratio controller using a multiple antisymmetric optimal control arrangement | Emerging Cross-Sectional Technologies | 19 | Active |
| US7757554B2 | High accuracy mass flow verifier with multiple inlets | Physics | 17 | Active |
| US10031005B2 | Method and apparatus for self verification of pressure-based mass flow controllers | Emerging Cross-Sectional Technologies | 16 | Active |
| US7461549B1 | Mass flow verifiers capable of providing different volumes, and related methods | Physics | 16 | Active |
| US8997686B2 | System for and method of fast pulse gas delivery | Emerging Cross-Sectional Technologies | 12 | Active |
| US9557744B2 | System for and method of monitoring flow through mass flow controllers in real time | Emerging Cross-Sectional Technologies | 11 | Active |
| US10031531B2 | System for and method of multiple channel fast pulse gas delivery | Emerging Cross-Sectional Technologies | 8 | Active |
| US9348339B2 | Method and apparatus for multiple-channel pulse gas delivery system | Physics | 8 | Active |
| US8079383B2 | Controller gain scheduling for mass flow controllers | Emerging Cross-Sectional Technologies | 6 | Active |
| US10031004B2 | Methods and apparatus for wide range mass flow verification | Physics | 6 | Active |
| US10606285B2 | System for and method of monitoring flow through mass flow controllers in real time | Emerging Cross-Sectional Technologies | 5 | Active |
| US7621290B2 | Gas delivery method and system including a flow ratio controller using antisymmetric optimal control | Emerging Cross-Sectional Technologies | 5 | Active |
| US7296465B2 | Vertical mount mass flow sensor | Physics | 4 | Expired |
| US9846074B2 | System for and method of monitoring flow through mass flow controllers in real time | Emerging Cross-Sectional Technologies | 4 | Active |
| US8849466B2 | Method of and apparatus for multiple channel flow ratio controller system | Emerging Cross-Sectional Technologies | 4 | Active |
| US10649471B2 | Method and apparatus for pulse gas delivery with isolation valves | Physics | 3 | Active |
| US9952078B2 | Upstream volume mass flow verification systems and methods | Physics | 3 | Active |
| US10801867B2 | Method and apparatus for self verification of pressured based mass flow controllers | Emerging Cross-Sectional Technologies | 3 | Active |
| US10353408B2 | System for and method of fast pulse gas delivery | Emerging Cross-Sectional Technologies | 3 | Active |
| US10126760B2 | System for and method of fast pulse gas delivery | Emerging Cross-Sectional Technologies | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.