US3127901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbing composition for tobacco smoke
Assignee: Individual
•
Filing: 1961-04-14
•
Granted: 1964-04-07
•
Expires: 1981-04-14
Abstract
No abstract record available.
Inventors
- 👤 Whitefield Harry
- 👤 Porta Mario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:35
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; A; A24; A24D; A24D3/00; A24D3/06; A24D3/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A CIGARETTE TIP INCORPORATING A FILTERING MATERIAL COMPRISING A POROUS SUPPORT HAVING DEPOSITED THEREON AT LEAST 1% BY WEIGHT OF AN ABSORBENT COMPOSITION FOR NOXIOUS COMBUSTION PRODUCTS OF TOBACCO, SAID COMPOSITION COMPRISING AN AMINE SELECTED FROM THE GROUP CONSISTING OF ALKYLAMINES AND HYDROXYALKYL-AMINES HAVING A BOILING POINT OF AT LEAST 60*C., A DOUBLE SALT OF SAID AMINE AND IRON SELECTED FROM THE GROUP CONSISTING OF SULFATES AND CHLORIDES, AND FERRIC-HYDROXIDE COLLOIDALLY DISPERSED IN THE AMINE.
References Cited (Backward Citations)
US757514A
Cited
US1859379A
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US2832351A
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US2815760A
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US2881772A
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US2968306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |