Tennesee Valley Authority
170Patents
9Active
170Granted
43Portfolio score
Filing activity: May 28, 1974 → Nov 9, 2012 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6751959B1 | Simple and compact low-temperature power cycle | Mechanical Engineering; Lighting; Heating | 94 | Expired |
| US3991225A | Method for applying coatings to solid particles | Chemistry; Metallurgy | 87 | Expired |
| US5953926A | Heating, cooling, and dehumidifying system with energy recovery | Mechanical Engineering; Lighting; Heating | 81 | Expired |
| US6136281A | Method to control mercury emissions from exhaust gases | Performing Operations; Transporting | 72 | Expired |
| US5914055A | Rotor repair system and technique | Performing Operations; Transporting | 58 | Expired |
| US4954134A | Agglomeration of gypsum, limestone, or gypsum-limestone mix | Chemistry; Metallurgy | 55 | Expired |
| US6192352A | Artificial neural network and fuzzy logic based boiler tube leak detection systems | Emerging Cross-Sectional Technologies | 54 | Expired |
| US4757263A | Insulation power factor alarm monitor | Physics | 53 | Expired |
| US5476528A | System for improving material release profiles | Chemistry; Metallurgy | 46 | Expired |
| US5879948A | Determination of total mercury in exhaust gases | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5407580A | Process for separating acid-sugar mixtures using ion exclusion chromatography | Performing Operations; Transporting | 40 | Expired |
| US5538637A | Process for separating acid-sugar mixtures using ion exclusion chromatography | Performing Operations; Transporting | 40 | Expired |
| US5034041A | Tent-free apparatus for particulate contamination control | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4134750A | Granular ammonium phosphate sulfate and urea-ammonium phosphate sulfate using a common pipe-cross reactor | Chemistry; Metallurgy | 39 | Expired |
| US7230837B1 | Method and circuit for cascaded pulse width modulation | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4959192A | Nozzle dam translocating system | Emerging Cross-Sectional Technologies | 36 | Expired |
| US5042861A | Nozzle dam remote installation system and technique | Emerging Cross-Sectional Technologies | 36 | Expired |
| US7633284B2 | Method and apparatus for managing ultracapacitor energy storage systems for a power transmission system | Electricity | 35 | Active |
| US4989818A | Nozzle dam remote installation system and technique | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5006302A | Nozzle dam remote installation system and technique | Emerging Cross-Sectional Technologies | 34 | Expired |
| US6599423B2 | High-efficiency processes for destruction of contaminants | Emerging Cross-Sectional Technologies | 32 | Expired |
| US3996022A | Conversion of waste rubber to fuel and other useful products | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4213924A | Granulation and coating by improved method of heat removal | Performing Operations; Transporting | 31 | Expired |
| US4842790A | Method and apparatus for producing high-strength grannular particulates from low-strength prills | Chemistry; Metallurgy | 31 | Expired |
| US5972118A | Concentrated sulfuric acid hydrolysis of lignocellulosics | Chemistry; Metallurgy | 30 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.