Matsushita Refrigeration Company
126Patents
2Active
126Granted
43Portfolio score
Filing activity: Jun 21, 1984 → Jan 12, 2007 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6684659B1 | Refrigerator and defrosting heater | Mechanical Engineering; Lighting; Heating | 450 | Expired |
| US6938968B2 | Vacuum insulating material and device using the same | Emerging Cross-Sectional Technologies | 139 | Expired |
| US5873489A | Commodities storing apparatus of vending machine | Physics | 136 | Expired |
| US6553774B1 | Self-diagnosing apparatus for refrigerator | Physics | 72 | Expired |
| US5199778A | Shelf apparatus for a refrigerator | Mechanical Engineering; Lighting; Heating | 72 | Expired |
| US6293107A | Thermoelectric cooling system | Mechanical Engineering; Lighting; Heating | 70 | Expired |
| US7316125B2 | Insulated box body, refrigerator having the box body, and method of recycling materials for insulated box body | Mechanical Engineering; Lighting; Heating | 64 | Expired |
| US7210308B2 | Refrigerator | Mechanical Engineering; Lighting; Heating | 62 | Expired |
| US6474073B1 | Thermoelectric device and thermoelectric manifold | Mechanical Engineering; Lighting; Heating | 61 | Expired |
| US6629429B1 | Refrigerator | Mechanical Engineering; Lighting; Heating | 60 | Expired |
| US5792801A | Thermal insulation foamed material having carbon dioxide absorbents and method for manufacturing same | Chemistry; Metallurgy | 57 | Expired |
| US6056519A | Structure of vibrating compressor | Mechanical Engineering; Lighting; Heating | 53 | Expired |
| US7078832B2 | Linear motor, and linear compressor using the same | Emerging Cross-Sectional Technologies | 51 | Expired |
| US6497113B1 | Refrigerator | Emerging Cross-Sectional Technologies | 50 | Expired |
| US6742353B2 | Refrigerator | Mechanical Engineering; Lighting; Heating | 48 | Expired |
| US6727627B1 | Permanent magnet synchronous motor | Electricity | 47 | Expired |
| US6775998B2 | Freezer and refrigerator provided with freezer | Mechanical Engineering; Lighting; Heating | 46 | Expired |
| US6084320A | Structure of linear compressor | Electricity | 46 | Expired |
| US5646499A | Inverter control apparatus | Electricity | 44 | Expired |
| US7061208B2 | Storage battery temperature regulator having thermoelectric transducer, and vehicle including the storage battery temperature regulator | Emerging Cross-Sectional Technologies | 42 | Expired |
| US6859364B2 | Portable information appliance | Human Necessities | 42 | Expired |
| US6327867A | Refrigerator having a cooler mounted in each of a refrigerator compartment and a freezer compartment | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5392849A | Layer-built heat exchanger | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US4668555A | Heat insulating body | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4788832A | Refrigerator | Mechanical Engineering; Lighting; Heating | 37 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.