Patent US3246655A successfully refreshed from Google Patents.
US3246655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective cigarette filters
Assignee: P Lorillard Co
•
Filing: 1963-03-19
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Granted: 1966-04-19
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Expires: 1983-03-19
Abstract
No abstract record available.
Inventors
- 👤 Alexander W Spears
- 👤 William E Routh
- 👤 Chase W Lassiter
- 👤 Jimmy H Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:47
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06; A24D3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN A FILTER-TIP CIGARETTE HAVING IN COMBINATION AN ELONGATED CYLINDRICAL PLUG OF SHREDDED TOBACCO JOINED AT ONE END THEREOF WITH A FILTER ELEMENT HAVING A FIBROUS BASE MATERIAL, THE IMPROVEMENT COMPRISING THE COMBINATION WITH SAID FIBROUS BASE MATERIAL OF (A) FROM 0.01% TO 25% BASED ON THE WEIGHT OF SAID FIBER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
60 words
IN A FILTER-TIP CIGARETTE HAVING IN COMBINATION AN ELONGATED CYLINDRICAL PLUG OF SHREDDED TOBACCO JOINED AT ONE END THEREOF WITH A FILTER ELEMENT HAVING A FIBROUS BASE MATERIAL, THE IMPROVEMENT COMPRISING THE COMBINATION WITH SAID FIBROUS BASE MATERIAL OF (A) FROM 0.01% TO 25% BASED ON THE WEIGHT OF SAID FIBER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
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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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |