| (19) |
 |
|
(11) |
EP 0 121 436 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
21.11.1985 Bulletin 1985/47 |
| (43) |
Date of publication A2: |
|
10.10.1984 Bulletin 1984/41 |
| (22) |
Date of filing: 30.03.1984 |
|
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| (84) |
Designated Contracting States: |
|
AT BE CH DE FR GB IT LI NL SE |
| (30) |
Priority: |
05.04.1983 JP 6048783
05.04.1983 JP 6048883
|
| (71) |
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED |
|
() |
|
| (72) |
Inventors: |
|
- Ohizumi, Isao
()
- Okayasu, Hiroshi
()
|
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| |
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(57) For the removal of harmful and hazardous substances, particularly suspected carcinogens,
contained in tobacco smoke, a tobacco filter is proposed which contains a phthalocyanine
compound, with or without a highly water-absorbing material, in the conventional material
of a tobacco filter.