James Tsai
48Patents
19h-index
22Co-inventors
81Inventor score
Filing activity: Sep 30, 1974 → Jan 24, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4822160A | Flashing spectacles | Physics | 135 | Expired |
| USD587684S1 | Communications headset | General | 81 | Expired |
| USD602908S1 | Microphone boom for a communications headset | General | 68 | Expired |
| US6357080B1 | Multi-sections retractable handle | Human Necessities | 56 | Expired |
| USD587683S1 | Communications headset | General | 52 | Expired |
| US5806143A | Three-segmented expandable pull rod of luggage | Human Necessities | 47 | Expired |
| US5692266A | Concealable and expandable handle | Human Necessities | 37 | Expired |
| US5395558A | Method of making a soft ophthalmic lens | Emerging Cross-Sectional Technologies | 37 | Expired |
| US6357567B1 | Luggage | Human Necessities | 36 | Expired |
| US9408449B1 | Stepless retractable handle assembly for luggage | Human Necessities | 33 | Active |
| US4878038A | Circuit protection device | Electricity | 30 | Expired |
| US6425599B1 | Collapsible trolley | Performing Operations; Transporting | 29 | Expired |
| US4388261A | Method for forming a compartmented puncture sealant package by co-extrusion | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5884362A | Expandable handle of luggage | Human Necessities | 23 | Expired |
| US5464244A | Retractable handle for hand trucks or the like | Performing Operations; Transporting | 23 | Expired |
| USD370406S | Safety hook | General | 23 | Expired |
| US5238388A | Ophthalmic lens mold seal | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5517735A | Safety rope hook | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4598165A | Conformable electromagnetic shield | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5911256A | Brush having a bristled head capable of being powered by water to swivel | Human Necessities | 17 | Expired |
| US5515576A | Retractable handle for luggage or hand trucks | Human Necessities | 16 | Expired |
| US6923466B2 | Collapsible handcart capable of extending the area of carrier by operating handle | Performing Operations; Transporting | 16 | Expired |
| USD365187S | Hand truck | General | 15 | Expired |
| US5909760A | Stepless expandable rod | Human Necessities | 14 | Expired |
| US6536078B2 | Retractable handle for a case | Human Necessities | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.