Apcom, Inc.
15Patents
0Active
15Granted
32Portfolio score
Filing activity: Jan 12, 1981 → Feb 18, 2005
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4505231A | Water heater construction with sediment removal means | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US4419567A | Heating element for electric water heater | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US7373080B2 | Water heater and method of operating the same | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US7103272B2 | Water heater and method of operating the same | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4913666A | Wiring terminal construction | Electricity | 19 | Expired |
| US5113480A | Fluid heater utilizing dual heating elements interconnected with conductive jumper | Electricity | 18 | Expired |
| US6662822B2 | One-way nut fastener | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4657215A | Mounting assembly for heater thermstat control | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US7017251B1 | Resistored anode and a water heater including the same | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7027724B2 | Water heater and method of operating the same | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4399971A | Mounting assembly for heater thermostat control | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5685481A | Trip-free high limit control | Electricity | 5 | Expired |
| US6164333A | Convection heat trap | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5548266A | Thermostat construction | Electricity | 3 | Expired |
| US5548267A | Thermostat construction with improved bi-metallic disk mounting arrangement | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.