Filter containing a metal phthalocyanine and a polycationic polymer
US7104265B2 · kind B2 · utility
4Cited by
45References
145Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2004 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Mar 17, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/16
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A tobacco smoke filter comprising one or more than one metal phthalocyanine, such as a copper phthalocyanine or an iron phthalocyanine, and further comprising one or more than one polycationic polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.