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| PT1434503: Activated charcoal filter for effectively reducing parabenzosemiquinone from the main stream cigaratte smoke | November 29, 2022 | 09/29/2004 |
| JP3966856: Activated charcoal filter for effectively reducing parabenzosemiquinone from the main stream cigaratte smoke | November 29, 2022 | 01/31/2002 |
| IT1434503: Activated charcoal filter for effectively reducing parabenzosemiquinone from the main stream cigaratte smoke | November 29, 2022 | 09/29/2004 |
| GR1434503: Activated charcoal filter for effectively reducing parabenzosemiquinone from the main stream cigaratte smoke | November 29, 2022 | 09/29/2004 |
| GB1434503: Activated charcoal filter for effectively reducing parabenzosemiquinone from the main stream cigaratte smoke | November 29, 2022 | 09/29/2004 |
| FR1434503: Activated charcoal filter for effectively reducing parabenzosemiquinone from the main stream cigaratte smoke | November 29, 2022 | 09/29/2004 |
| DE1434503: Activated charcoal filter for effectively reducing parabenzosemiquinone from the main stream cigaratte smoke | November 29, 2022 | 09/29/2004 |
| CA2462513: Activated charcoal filter for effectively reducing parabenzosemiquinone from the main stream cigaratte smoke | November 29, 2022 | 04/05/2004 |