Tobacco – Tobacco users' appliance – Supports
Patent
1975-02-26
1977-07-05
Michell, Robert W.
Tobacco
Tobacco users' appliance
Supports
131 10A, A24D 104
Patent
active
040333620
ABSTRACT:
The present invention relates to a new type of filter for tobacco smoke, which filter has a diffusion portion, in which the smoke stream is separated from the outer air by means of a membrane, which is permeable to low molecular smoke constituents.
REFERENCES:
patent: 3066681 (1962-12-01), Cohn
patent: 3324861 (1967-06-01), Gaisman
patent: 3351072 (1967-11-01), Baum et al.
patent: 3512537 (1970-05-01), Pelletier
patent: 3596663 (1971-08-01), Schultz
patent: 3602232 (1971-08-01), Grauvogel et al.
patent: 3714949 (1973-02-01), King
"Silicon Rubber as a Selective Barrier" by Kammermeyer Industrial & Engineering Chemistry, vol. 49, No. 10, pp. 1685, 1686, Oct. 1957.
Almqvist Sven-Olof
Artho Antoine
Enzell Curt R.
Hjern Lasse O.
Koch Robert
F.J. Burrus & Cie
Michell Robert W.
Millin V.
Svenska Tobaks AB
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