Patent US3632384A successfully refreshed from Google Patents.
US3632384A
Expired / Lapsed
US
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Method of making cigarette paper with ash-retaining means
Assignee: SAINT PASTOU JOSEPH
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Filing: 1968-07-02
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Granted: 1972-01-04
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Expires: 1988-07-02
Abstract
Abstract This disclosure concerns cigarette paper which has an open network consisting of a flameproof substance intended to maintain ashes in place after combustion of the tobacco and of the paper, characterized by the fact that the elements forming said network are slightly profiled and that the junction points of these elements are reinforced in order to give the assembly sufficient rigidity. The disclosure also concerns a process for making this cigarette paper and cigarettes using such paper.
Inventors
- 👤 Joseph Saint-Pastou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:22
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/52; D21H23/56; D21H23/58; A; A24; A24D; A24D1/00; A24D1/02; D21H17/00; D21H17/63; D21H17/67; D21H27/00; D21H27/02; D21H5/00; D21H5/12; D21H5/14; D21H5/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
19 words
A method according to claim 1, in which said impregnant material is deposited on both sides of said paper.
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US2380047A
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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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |