Kazuhiko Sekizawa
21Patents
10h-index
27Co-inventors
71Inventor score
Filing activity: Nov 30, 1979 → Jun 10, 1996
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5443803A | Catalyst for purifying exhaust gas | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5208198A | Catalyst for purifying exhaust gas | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4250339A | Process for producing methacrolein | Performing Operations; Transporting | 19 | Expired |
| US5427753A | Process for removing nitrogen oxides from oxygen rich exhaust gas | Performing Operations; Transporting | 18 | Expired |
| US5382416A | Method for purifying exhaust gas | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5206196A | Catalyst for purifying exhaust gas | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5807528A | Catalyst for purifying exhaust gas | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5236879A | Catalyst for purifying exhaust gas | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5695728A | Method for removal of nitrogen oxides | Performing Operations; Transporting | 12 | Expired |
| US4982003A | Mixed oxide catalyst and process for producing an alkylenamine by using the catalyst | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5374409A | Purifying gases with an alkali metal and transition metal containing zeolite | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5449504A | Process for removing nitrogen oxides from oxygen rich exhaust gas | Performing Operations; Transporting | 7 | Expired |
| US4463105A | Process for producing oxygen-containing hydrocarbon compounds | Chemistry; Metallurgy | 6 | Expired |
| US4914247A | Process for preparing para-substituted halogenobenzene derivatives | Chemistry; Metallurgy | 6 | Expired |
| US4849560A | Process for preparation of halogenated benzene derivatives | Chemistry; Metallurgy | 5 | Expired |
| US4861929A | Process for producing halogenated benzene derivative using zeolite catalyst | Chemistry; Metallurgy | 4 | Expired |
| US5001289A | Shaped zeolite catalyst for liquid phase organic reactions | Performing Operations; Transporting | 4 | Expired |
| US4792644A | Preparation of halogenated benzene derivatives | Chemistry; Metallurgy | 3 | Expired |
| US5073649A | Process for producing a polyalkylene polyamine | Emerging Cross-Sectional Technologies | 0 | Expired |
| US4740641A | Producing a halogenated benzene derivative using zeolite catalyst treated with alkali solution of pH 11 or more | Performing Operations; Transporting | 0 | Expired |
| US5149877A | Process for producing alkylenamine | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.