Long Chen
35Patents
14h-index
23Co-inventors
81Inventor score
Filing activity: Jul 8, 1992 → Aug 30, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6540697B2 | Safety vacuum syringe for blood sampling conformed to ergonomics | Human Necessities | 59 | Expired |
| US5569203A | Simplified safety syringe with retractable self-biased needle and minimized plunger | Human Necessities | 45 | Expired |
| US5575774A | Structure of safety hypodermic syringe | Human Necessities | 40 | Expired |
| US5242402A | Safety syringe with retractible self-biased needle adapted for intravenous injection | Human Necessities | 31 | Expired |
| US5328475A | Simplified safety syringe with retractable self-biased needle | Human Necessities | 31 | Expired |
| US5405327A | Simplified safety syringe with retractable self-biased needle and minimized plunger | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5232458A | Safety syringe with retractable self-biased needle | Human Necessities | 29 | Expired |
| US5205826A | Automatically blocked safety syringe | Human Necessities | 28 | Expired |
| US6117107A | Safety syringe for intravenous injection with a guided plunger | Human Necessities | 27 | Expired |
| US7104970B2 | Injection syringe with seal structure | Human Necessities | 20 | Expired |
| US5273539A | Automatically blocked safety syringe adapted for intravenous injection | Human Necessities | 20 | Expired |
| US5582594A | Hypodermic syringe with a safe needle cap | Human Necessities | 18 | Expired |
| US5752936A | Safety vacuum syringe with two opposite needles for blood sampling | Human Necessities | 17 | Expired |
| US6764465B2 | Syringe with retractable needle and safety lock | Human Necessities | 15 | Expired |
| US9909760B2 | Push-button type flint ignition mechanism capable of automatic resetting | Mechanical Engineering; Lighting; Heating | 10 | Active |
| US5295973A | Safety syringe | Human Necessities | 9 | Expired |
| US5273538A | Automatically blocked safety syringe with greatly unaligned blocking bulb | Human Necessities | 9 | Expired |
| US5591131A | Safety minute dose hypodermic syringe | Human Necessities | 7 | Expired |
| USD1058445S1 | Mobility scooter | General | 5 | Active |
| US5361817A | Heat-dissipating means of nest tire structure for a run-flat tire | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5938622A | Safety vacuum syringe for blood sampling conformed to ergonomics | Human Necessities | 5 | Expired |
| US6511440B2 | Safety vacuum syringe for blood sampling conformed to ergonomics | Human Necessities | 3 | Expired |
| US5562627A | Safety syringe with retractable self-biased needle for intravenous injection without packing ring | Human Necessities | 3 | Expired |
| US10914605B1 | Guided batching | Physics | 3 | Active |
| US5776076A | Safety vacuum syringe for blood sampling | Human Necessities | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.