CNG Research Company
13Patents
0Active
13Granted
33Portfolio score
Filing activity: Apr 18, 1979 → Sep 29, 1989
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4609388A | Gas separation process | Emerging Cross-Sectional Technologies | 113 | Expired |
| US4270937A | Gas separation process | Emerging Cross-Sectional Technologies | 95 | Expired |
| US4377392A | Coal composition | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4369351A | Method and apparatus for heating liquids and agglomerating slurries | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4421722A | Adiabatic expansion orifice assembly for passing a slurry from a high pressure region to a low pressure region | Performing Operations; Transporting | 11 | Expired |
| US4373864A | System for pumping fluids at constant pressure | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5021232A | Sulfur recovery process | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4364740A | Method for removing undesired components from coal | Chemistry; Metallurgy | 10 | Expired |
| US4581052A | Gas separation process | Chemistry; Metallurgy | 8 | Expired |
| US4623372A | Crystallization process | Performing Operations; Transporting | 7 | Expired |
| US4286111A | Apparatus for interconnecting a power supply to an electrode within a chamber containing fluid maintained at a high temperature and pressure | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4362181A | Pressure relief system | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4469280A | Method for heating agglomerating slurries | Mechanical Engineering; Lighting; Heating | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.