Procatalyse
17Patents
0Active
17Granted
33Portfolio score
Filing activity: May 15, 1979 → Mar 26, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4492769A | Pollution control catalyst for internal combustion engine exhaust system/catalytic converter and process for its preparation | Emerging Cross-Sectional Technologies | 88 | Expired |
| US4581343A | Process for the preparation of a pollution control catalyst for internal combustion engine exhaust system/catalytic converter | Emerging Cross-Sectional Technologies | 50 | Expired |
| US4621071A | Composite catalyst for treatment of vehicular exhaust gases and process for the preparation of the catalyst | Performing Operations; Transporting | 49 | Expired |
| US4931419A | Catalyst for the conversion of vehicular exhaust gases and process for preparing the catalyst | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4492770A | Catalyst and use thereof in treating internal combustion engine exhaust gases | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4426319A | Catalyst for treatment of exhaust gases from internal combustion engines | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4985387A | Catalyst supports/catalysts for the treatment of vehicular exhaust gases | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4378307A | Pollution control catalyst for internal combustion engine exhaust system/catalytic converter | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4247730A | Hydrodealkylation of alkylaromatic hydrocarbons | Chemistry; Metallurgy | 20 | Expired |
| US4680282A | Pollution control catalyst for internal combustion engine exhaust gases and process for producing it | Performing Operations; Transporting | 16 | Expired |
| US5039503A | CO+H.sub.2 O catalytic conversions | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4906448A | CO+H.sub.2 O catalytic conversions | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5053378A | Multi-purpose catalysts for vehicular catalytic converters | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5124304A | Multi-purpose catalyst for vehicular catalytics converters | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4908199A | CO+H.sub.2 O catalytic conversions | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6100210A | Method for regenerating a catalyst with a sulphurus active phase and contaminated by a mercury compound | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5942458A | Regeneration of spent As-poisoned lead catalysts | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.