Apt Co., Ltd
15Patents
1Active
15Granted
34Portfolio score
Filing activity: Jan 14, 1977 → Aug 20, 2004 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4169714A | Removal of fine particles from a gas stream by solid particle addition in venturi contactor | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5434594A | Computer peripheral device for positioning a cursor on a computer display | Physics | 19 | Expired |
| US5632146A | Load shaping compressed air system | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4220817A | Audio playback systems | Electricity | 10 | Expired |
| US5353380A | Approximate reasoning apparatus | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4333827A | Automatic engine shut down device and systems employing the same | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5165651A | Machine foundation and method for preparing or repairing a machine foundation | Performing Operations; Transporting | 6 | Expired |
| US4163649A | Collection of fine particles from a gas stream by moving the gas stream upward through a shallow bed of solid granules | Performing Operations; Transporting | 4 | Expired |
| US5240223A | Reuseable mold for forming a hollow aggregate filled thermoset article | Performing Operations; Transporting | 3 | Expired |
| US5419529A | Reusable mold for forming premolded pieces and a modular contained machine foundation | Performing Operations; Transporting | 2 | Expired |
| US5437430A | Method for preparing or repairing a machine foundation | Performing Operations; Transporting | 2 | Expired |
| US7588747B2 | Singlet oxygen quencher and composition using the same | Human Necessities | 2 | Expired |
| US7452554B2 | Platinum nanocolloid solution, process for producing the same and drink containing platinum nanocolloid | Human Necessities | 1 | Expired |
| US6739741B2 | Display device by columnar light | Physics | 1 | Expired |
| US7838043B2 | Superoxide anion decomposing agent | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.