Edtech Co., Ltd.
7Patents
0Active
7Granted
28Portfolio score
Filing activity: Nov 8, 1988 → Apr 5, 2000
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5048784A | Adjustable inset bracket | Human Necessities | 72 | Expired |
| US4976407A | Adjustable wrist support | Human Necessities | 62 | Expired |
| US4969403A | Automatic vertically adjustable work surface | Human Necessities | 45 | Expired |
| US5083514A | Automatic vertically adjustable work surface | Human Necessities | 28 | Expired |
| US4987835A | Automatic vertically adjustable work surface | Human Necessities | 24 | Expired |
| US4881471A | Vertically adjustable, retrofittable workstation | Human Necessities | 21 | Expired |
| US6781581B1 | Apparatus for interfacing timing information in digital display device | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.