PSI CO., LTD.
21Patents
10Active
21Granted
45Portfolio score
Filing activity: Sep 1, 1981 → Jan 6, 2017 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5540688A | Intervertebral stabilization device incorporating dampers | Emerging Cross-Sectional Technologies | 817 | Expired |
| US5375823A | Application of an improved damper to an intervertebral stabilization device | Mechanical Engineering; Lighting; Heating | 740 | Expired |
| US5480401A | Extra-discal inter-vertebral prosthesis for controlling the variations of the inter-vertebral distance by means of a double damper | Emerging Cross-Sectional Technologies | 436 | Expired |
| US9112112B2 | Subminiature led element and manufacturing method thereof | Electricity | 124 | Active |
| US9773761B2 | Ultra-small LED electrode assembly and method for manufacturing same | Emerging Cross-Sectional Technologies | 94 | Active |
| US5426855A | Safety utility knife | Performing Operations; Transporting | 70 | Expired |
| US5303474A | Safety utility knife | Performing Operations; Transporting | 60 | Expired |
| US9570425B2 | Display comprising ultra-small LEDs and method for manufacturing same | Electricity | 56 | Active |
| US5890294A | Locking safety utility knife | Performing Operations; Transporting | 54 | Expired |
| US9978725B2 | LED lamp using ultra-small LED electrode assembly | Emerging Cross-Sectional Technologies | 19 | Active |
| USD401832S | Locking safety utility knife | General | 18 | Expired |
| US9059114B2 | Full-color LED display device and manufacturing method thereof | Electricity | 14 | Active |
| US4458241A | Device for protecting works of art | Physics | 7 | Expired |
| US9935241B2 | Solvent for manufacture of self-assembled nano-scale LED electrode assembly and method for manufacturing self-assembled nano-scale LED electrode assembly by the same | Electricity | 6 | Active |
| US9024335B2 | Multi-package white LED device | Electricity | 4 | Active |
| US10062804B2 | Method of manufacturing nano-scale LED electrode assembly comprising selective metal ohmic layer | Electricity | 3 | Active |
| US7943947B2 | LED device comprising thin-film phosphor having two dimensional nano periodic structures | Electricity | 2 | Active |
| US4533329A | Educational device for teaching the proper placement of information | Physics | 2 | Expired |
| US4504235A | Educational device for teaching collating skills | Physics | 2 | Expired |
| US4791872A | Vehicle and track system | Performing Operations; Transporting | 1 | Expired |
| US9293668B2 | Phosphor-converted single-color LED including a long-wavelength pass filter | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.