Patent US3084247A successfully refreshed from Google Patents.
US4038992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granular composition for tobacco filter
Assignee: Japan Tobacco Inc
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Filing: 1975-09-29
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Granted: 1977-08-02
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Expires: 1995-09-29
Abstract
Abstract A granular composition having a grain size of 10 to 50 mesh and a bulk density of 0.5 to 0.7 g/cm 3 suitable for use in a tobacco filter or a tobacco pipe and having the ability to selectively remove carcinogenic and deleterious components from tobacco smoke comprises granules which are composed of bovine milk whey protein power and/or egg white protein powder, and one or more excipients selected from the group consisting of powdered cellulose, wheat flour, starch, rice flour, sugar, glucose, lactose, talc, alumina, zeolite or silica gel; or composite granules which are a blend of said granules and charcoal granules.
Inventors
- 👤 Katsuhiro Ogasa
- 👤 Joji Ono
- 👤 Tsutomu Kudo
- 👤 Kazuyoshi Doi
- 👤 Katsuichi Noguchi
- 👤 Kazuo Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:27
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
A granular composition suitable for use in a tobacco filter and having an ability to selectively and effectively remove the carcinogenic and deleterious components from tobacco smoke comprising a blend of: a. from 40 to 80%, by weight, of granules having a grain size of 10 to 50 mesh and a bulk density of 0.5 to 0.7 g/cm 3 which are composed of 5 to 70%, by weight, of protein powder selected from the group consisting of bovine milk whey protein powder, egg white protein powder, and mixtures thereof, which is coated onto 30 to 95%, by weight, of excipient granules, and b. from 20 to 60%, by weight, of active charcoal granules having a grain size of 10 to 50 mesh and a bulk density of 0.5 to 0.7 g/cm 3 .
Claim 2
Dependent Claim
133 words
A granular composition suitable for use in a tobacco filter and having an ability to selectively and effectively remove the carcinogenic and deleterious components from tobacco smoke comprising a blend of: a. from 40 to 80%, by weight, of granules having a grain size of 10 to 50 mesh and a bulk density of 0.5 to 0.7 g/cm 3 which are composed of 5 to 70%, by weight, of protein powder selected from the group consisting of bovine milk whey protein powder, egg white protein powder, and mixtures thereof, which is coated onto 30 to 95%, by weight, of excipient granules, and b. from 20 to 60%, by weight, of active charcoal granules having a grain size of 10 to 50 mesh and a bulk density of 0.5 to 0.7 g/cm 3 .
Claim 3
Dependent Claim
33 words
The composition of claim 1, wherein said excipient is selected from the group consisting of powdered cellulose, wheat flour, starch, rice flour, sugar, glucose, lactose, talc, alumina, zeolite, silica gel and mixtures thereof.
Claim 4
Dependent Claim
12 words
A tobacco filter whose active ingredients comprise the composition of claim 1.
Claim 5
Dependent Claim
24 words
A triple filter for cigarettes comprising a first and third layer of acetylcellulose and a second intervening layer of the composition of claim 1.
Claim 6
Dependent Claim
9 words
A filter cigarette having the filter of claim 3.
Claim 7
Dependent Claim
23 words
A method for reducing the carcinogenic and deleterious components in tobacco smoke which comprises passing the smoke through the filter of claim 5.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |