American Gas Association
18Patents
0Active
18Granted
34Portfolio score
Filing activity: Dec 20, 1972 → Jan 11, 1996
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5452087A | Method and apparatus for measuring pressure with embedded non-intrusive fiber optics | Physics | 57 | Expired |
| US3973056A | Inhibition of stress-corrosion cracking of steel pipeline | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4151191A | Sulfur resistant molybdenum catalysts for methanation | Chemistry; Metallurgy | 18 | Expired |
| US5236327A | Low NO.sub.x burner | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US5658139A | Low NO.sub.X burner | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4009321A | High temperature fuel cell electrolyte | Electricity | 13 | Expired |
| US4395911A | Method and apparatus for precise determination of girth weld defects | Physics | 12 | Expired |
| US3953575A | Iron oxide sorbents for regenerative sorption of No.sub.x | Performing Operations; Transporting | 9 | Expired |
| US4708635A | Pulse combustion apparatus and method | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US3939257A | Process for producing hydrogen from water | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4132672A | Methanation catalyst | Chemistry; Metallurgy | 7 | Expired |
| US3998942A | Process for producing hydrogen and oxygen from water | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5460513A | Low NO.sub.x burner | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4752209A | Pulse combustion burner feed valve | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4685510A | Pulse combustion engine and heat transfer system | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4574745A | Compact pulse combustion burner with enhanced heat transfer | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4075313A | Process for producing hydrogen and oxygen from water | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4730990A | Pulse combustion engine and heat transfer system | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.