OPT Industries, Inc.
9Patents
4Active
9Granted
38Portfolio score
Filing activity: May 20, 1976 → Feb 10, 2022
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4488057A | AC-DC Switching regulator uninterruptible power supply | Electricity | 38 | Expired |
| US5331536A | Low leakage high current transformer | Electricity | 31 | Expired |
| US4843301A | Power supply with switching means responsive to line voltage | Electricity | 20 | Expired |
| US4020394A | Ground fault detector | Electricity | 13 | Expired |
| US4409569A | Filter circuits having transformers as filter elements | Electricity | 6 | Expired |
| US11275354B2 | Systems, methods and file format for 3D printing of microstructures | Emerging Cross-Sectional Technologies | 1 | Active |
| US11681269B2 | Systems, methods and file format for 3D printing of microstructures | Emerging Cross-Sectional Technologies | 0 | Active |
| US12285912B2 | Additive manufacturing on pliable substrates | Performing Operations; Transporting | 0 | Active |
| US11567474B2 | Systems, methods and file format for 3D printing of microstructures | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.