STC, Inc.
42Patents
34Active
42Granted
56Portfolio score
Filing activity: Oct 11, 1984 → Dec 11, 2023 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6829589B1 | Method and apparatus for stock and index option price improvement, participation, and internalization | Physics | 128 | Expired |
| US4883225A | Fail-safe thermostat for vehicular cooling systems | Emerging Cross-Sectional Technologies | 46 | Expired |
| US4643446A | Mobile chair with removable rear wheel assembly | Emerging Cross-Sectional Technologies | 38 | Expired |
| US6190690A | Sustained/immediate acting ketoprofen patch and process for manufacturing the same | Human Necessities | 27 | Expired |
| US9542852B2 | Mass transit safety notification system and device | Performing Operations; Transporting | 27 | Active |
| USD332629S | Tape dispenser | General | 21 | Expired |
| US8878695B2 | Signal light priority system utilizing estimated time of arrival | Physics | 16 | Active |
| US9953522B2 | Systems and methods for the detection of pedestrians and small vehicles at roadway intersections | Electricity | 15 | Active |
| US8783626B2 | Light rail vehicle monitoring and stop bar overrun system | Performing Operations; Transporting | 15 | Active |
| US9302687B2 | Light rail vehicle monitoring and stop bar overrun system | Performing Operations; Transporting | 12 | Active |
| US9751543B2 | Light rail vehicle monitoring and stop bar overrun system | Performing Operations; Transporting | 12 | Active |
| US9916759B2 | Signal light priority system utilizing estimated time of arrival | Physics | 12 | Active |
| US5338783A | Silicone binder material and products formed therefrom | Emerging Cross-Sectional Technologies | 9 | Expired |
| US10029716B2 | Mass transit safety notification system and device | Performing Operations; Transporting | 8 | Active |
| US11202302B2 | Systems and methods for traffic priority systems | Electricity | 8 | Active |
| US8773282B2 | Signal light priority system utilizing estimated time of arrival | Physics | 7 | Active |
| US5271035A | Repeater supervision | Electricity | 7 | Expired |
| US9330566B2 | Signal light priority system utilizing estimated time of arrival | Physics | 6 | Active |
| US10679495B2 | Systems and methods for detection of travelers at roadway intersections | Physics | 5 | Active |
| US10311725B2 | Systems and methods for detection of travelers at roadway intersections | Physics | 5 | Active |
| US8647337B2 | Devices and methods for dispensing a cryogenic fluid | Human Necessities | 3 | Active |
| US11827257B2 | Mass transit safety notification system and device | Performing Operations; Transporting | 1 | Active |
| US10836352B2 | Vehicle starting control system by using face perception data and method thereof | Performing Operations; Transporting | 0 | Active |
| US12167440B2 | Systems and methods for traffic priority systems | Electricity | 0 | Active |
| US12162524B2 | Mass transit safety notification system and device | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.