Cities Service Co.
110Patents
0Active
110Granted
43Portfolio score
Filing activity: Jul 16, 1971 → Feb 21, 1986
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4412585A | Electrothermal process for recovering hydrocarbons | Fixed Constructions | 340 | Expired |
| US4501445A | Method of in-situ hydrogenation of carbonaceous material | Fixed Constructions | 299 | Expired |
| US4421943A | Collapsible mobile solar energy power source | Emerging Cross-Sectional Technologies | 146 | Expired |
| US4463988A | Horizontal heated plane process | Fixed Constructions | 143 | Expired |
| US4216079A | Emulsion breaking with surfactant recovery | Performing Operations; Transporting | 136 | Expired |
| US4415034A | Electrode well completion | Fixed Constructions | 133 | Expired |
| US4420866A | Apparatus and process for selectively expanding to join one tube into another tube | Emerging Cross-Sectional Technologies | 114 | Expired |
| US4422317A | Apparatus and process for selectively expanding a tube | Performing Operations; Transporting | 93 | Expired |
| US4303174A | Foot operated container and covering device | Performing Operations; Transporting | 79 | Expired |
| US4030549A | Recovery of geothermal energy | Emerging Cross-Sectional Technologies | 67 | Expired |
| US4444276A | Underground radial pipe network | Fixed Constructions | 59 | Expired |
| US4703797A | Sweep improvement in enhanced oil recovery | Emerging Cross-Sectional Technologies | 54 | Expired |
| USD264040S | Laundry basket | General | 52 | Expired |
| US4111189A | Combined solar radiation collector and thermal energy storage device | Emerging Cross-Sectional Technologies | 50 | Expired |
| US3978920A | In situ combustion process for multi-stratum reservoirs | Fixed Constructions | 50 | Expired |
| US4264329A | Tracing flow of fluids | Emerging Cross-Sectional Technologies | 46 | Expired |
| US4065034A | Gun-type dispenser for heat softenable adhesive or sealant compounds | Physics | 46 | Expired |
| USD266709S | Beverage bottle transport case | General | 45 | Expired |
| US4013622A | Method of reducing breakdown in polyethylene film | Chemistry; Metallurgy | 43 | Expired |
| US4452234A | Collapsible mobile solar energy power source | Emerging Cross-Sectional Technologies | 37 | Expired |
| US3981659A | Apparatus for drying carbon black pellets | Chemistry; Metallurgy | 34 | Expired |
| US3976530A | Method for producing a two component polymeric tape | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4119239A | Container lock device | Performing Operations; Transporting | 32 | Expired |
| US4406499A | Method of in situ bitumen recovery by percolation | Fixed Constructions | 32 | Expired |
| US4221763A | Multi tube high pressure, high temperature reactor | Mechanical Engineering; Lighting; Heating | 31 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.