NORITZ CORPORATION
219Patents
197Active
219Granted
58Portfolio score
Filing activity: Sep 5, 2002 → Jan 31, 2024 · 10 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9228742B2 | Rich-lean combustion burner and combustion apparatus | Mechanical Engineering; Lighting; Heating | 108 | Active |
| USD612925S1 | Duct joint | General | 49 | Expired |
| US7647897B2 | Heating apparatus | Emerging Cross-Sectional Technologies | 49 | Expired |
| USD483844S1 | Gas water heater | General | 39 | Expired |
| USD483451S1 | Gas water heater | General | 25 | Expired |
| US7058457B2 | Hot water supply system | Physics | 22 | Expired |
| USD483453S1 | Gas water heater | General | 21 | Expired |
| USD483452S1 | Gas water heater | General | 20 | Expired |
| USD847309S1 | Pipe adapter for water heater | General | 20 | Active |
| USD570976S1 | Gas water heater | General | 18 | Expired |
| USD570974S1 | Gas water heater | General | 18 | Expired |
| US8418661B2 | Combustion apparatus | Mechanical Engineering; Lighting; Heating | 17 | Active |
| US7458340B2 | Water heater | Emerging Cross-Sectional Technologies | 17 | Expired |
| USD823442S1 | Cap for pipe adapter for water heater | General | 16 | Active |
| US6746236B2 | Combustion apparatus | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| USD842443S1 | Water heater | General | 14 | Active |
| USD804623S1 | Water heater | General | 14 | Active |
| US6918757B2 | Combustion apparatus | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US9291364B2 | Combustion apparatus | Emerging Cross-Sectional Technologies | 12 | Active |
| US7523721B2 | Heat exchanger and water heater | Emerging Cross-Sectional Technologies | 12 | Expired |
| USD828524S1 | Packing for pipe adapter for water heater | General | 11 | Active |
| USD833589S1 | Water heater | General | 11 | Active |
| US6786717B2 | Combustion apparatus | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| USD570973S1 | Gas water heater | General | 9 | Expired |
| US10890356B2 | Heat exchange device and heat source machine | Emerging Cross-Sectional Technologies | 9 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.