Electro Industries, Inc.
33Patents
3Active
33Granted
39Portfolio score
Filing activity: Jan 28, 1974 → Oct 22, 2007 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6420801B1 | Alternative power supply connection | Electricity | 59 | Expired |
| US4520303A | Induction motors | Electricity | 57 | Expired |
| US4689735A | Power supply for single-phase traction system | Emerging Cross-Sectional Technologies | 31 | Expired |
| US7716943B2 | Heating/cooling system | Emerging Cross-Sectional Technologies | 29 | Active |
| US6074246A | Meter extender mount for generator interface | Electricity | 29 | Expired |
| US4417911A | Manufacture of optical fibre preforms | Chemistry; Metallurgy | 29 | Expired |
| US4269024A | Strength members for the reinforcement of optical fibre cables | Emerging Cross-Sectional Technologies | 24 | Expired |
| US3935397A | Electrostatic loudspeaker element | Electricity | 22 | Expired |
| US4408378A | Apparatus for forming a filament coil of figure of eight conformation | Performing Operations; Transporting | 16 | Expired |
| US4512827A | Method of manufacturing mineral insulated electric cable and like elements | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7849700B2 | Heat pump with forced air heating regulated by withdrawal of heat to a radiant heating system | Mechanical Engineering; Lighting; Heating | 15 | Active |
| US4628245A | Multipolar excitation systems | Electricity | 13 | Expired |
| US4092577A | Dynamic braking of direct current motors | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4315202A | Synchronous motors | Electricity | 10 | Expired |
| US4672284A | Permanent split-phase capacitor induction motor | Electricity | 10 | Expired |
| US4626777A | D.C. current transformer circuits | Physics | 10 | Expired |
| US4450388A | Dynamic braking of direct current motors | Electricity | 8 | Expired |
| US4313247A | Apparatus for the manufacture of mineral insulated cables | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4017790A | Alternating current power transmission systems | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4177682A | Mechanism and a method for the support and stepwise rotation of a member | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4503380A | Static reactive compensator | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4112403A | Saturated reactor arrangements | Electricity | 7 | Expired |
| USD266505S | Loudspeaker mounting | General | 6 | Expired |
| US4065251A | Furnaces | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US3950641A | Methods of mass spectrometry and mass spectrometers | Electricity | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.