CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY
120Patents
72Active
120Granted
53Portfolio score
Filing activity: Jun 30, 1977 → Oct 12, 2021 · 50 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6816078B2 | System and method for estimating power consumption of electric apparatus, and abnormality alarm system utilizing the same | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5171941A | Superconducting strand for alternating current | Electricity | 37 | Expired |
| US6467289B2 | Hot-water supply system with heat pump cycle | Emerging Cross-Sectional Technologies | 36 | Expired |
| US5420897A | Fast reactor having reflector control system | Emerging Cross-Sectional Technologies | 33 | Expired |
| US6467288B2 | Heat-pump water heater | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6944255B2 | Nuclear reactor | Emerging Cross-Sectional Technologies | 28 | Expired |
| US8128988B2 | Film-formed article and method for producing same | Emerging Cross-Sectional Technologies | 25 | Active |
| US6627858B2 | Hot-water supply system | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US6418737B1 | Heat pump type hot-water supply system capable of performing defrosting operation | Emerging Cross-Sectional Technologies | 22 | Expired |
| US8649198B2 | Power conversion device | Electricity | 18 | Active |
| US4107981A | Method of estimating ground pressure | Physics | 18 | Expired |
| US6430949B1 | Heat-pump water heater | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6370896B1 | Hot water supply system | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7081420B2 | Method for preparing SiC crystal and SiC crystal | Chemistry; Metallurgy | 14 | Expired |
| US5012984A | Process for production of coal-water mixture | Chemistry; Metallurgy | 13 | Expired |
| US6494051B2 | Hot water supply system | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6923842B2 | Method and apparatus for producing fine particles, and fine particles | Performing Operations; Transporting | 12 | Expired |
| US7138183B2 | Environmental barrier coating material and coating structure and ceramic structure using the same | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US8716718B2 | Epitaxial SiC single crystal substrate and method of manufacture of epitaxial SiC single crystal substrate | Electricity | 11 | Active |
| US6540015B1 | Heat exchanger and method for manufacturing the same | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7507650B2 | Process for producing Schottky junction type semiconductor device | Electricity | 11 | Expired |
| US8329345B2 | Combined power generation equipment | Emerging Cross-Sectional Technologies | 11 | Active |
| US6083286A | High-concentration coal/water mixture fuel and process for production thereof | Chemistry; Metallurgy | 11 | Expired |
| US7900516B2 | Ultrasonic flaw detection apparatus and ultrasonic flaw detection method | Physics | 11 | Active |
| US7513163B2 | Pressure sensor and device for measuring pressure | Physics | 11 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.