Patent US2786471A successfully refreshed from Google Patents.
US2786471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cigarettes
Assignee: Individual
•
Filing: 1953-04-13
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Granted: 1957-03-26
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Expires: 1973-04-13
Abstract
No abstract record available.
Inventors
- 👤 Graybeal Kenneth Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:06
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04; A24D3/06; A24D3/16; A24D3/166
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A TOBACCO SMOKING PRODUCT COMPRISING ALENGTH OF TOBACCO ADAPTED TO BE BURNED TO PRODUCE SMOKE, A LENGTH OF FILTERING BODY COMPRISING GRANULES OF EXPANDED VERMICULITE ADHACENT TO BUT SEPARATE FROM SAID LENGTH OF TOBACCO AND IN LINE THEREWITH SO THAT SMOKE FROM THE TOBACCO WHEN BURNING WILL PASS THROUGH T HE VERMICULITE, AND COMMON WRAPPING ENCLOSING THE TOBACCO AND VERMICULITE.
Claim 2
Dependent Claim
60 words
A TOBACCO SMOKING PRODUCT COMPRISING ALENGTH OF TOBACCO ADAPTED TO BE BURNED TO PRODUCE SMOKE, A LENGTH OF FILTERING BODY COMPRISING GRANULES OF EXPANDED VERMICULITE ADHACENT TO BUT SEPARATE FROM SAID LENGTH OF TOBACCO AND IN LINE THEREWITH SO THAT SMOKE FROM THE TOBACCO WHEN BURNING WILL PASS THROUGH T HE VERMICULITE, AND COMMON WRAPPING ENCLOSING THE TOBACCO AND VERMICULITE.
References Cited (Backward Citations)
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US606537A
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US1972718A
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US1898774A
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US2108860A
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US2327991A
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Cited
US2547119A
Cited
AT271919B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |