US3103220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter cigarettes
Assignee: Celanese Corp
•
Filing: 1959-06-12
•
Granted: 1963-09-10
•
Expires: 1979-06-12
Abstract
No abstract record available.
Inventors
- 👤 William R Mahoney
- 👤 Pierre Richard E St
- 👤 Donald T Dunlap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:20
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/02; A24D3/0204
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A CIGARETTE HAVING INCORPORATED THEREIN AS A FILTER A PLUG OF SUBSTANTIALLY UNIFORM CROSS-SECTIONAL DENSITY COMPRISING CRIMPED CELLULOSE ACETATE CONTINUOUS FILAMENTS CARRYING LESS THAN ABOUT 10% OF A PLASTICIZER BASED ON
Claim 2
Dependent Claim
31 words
A CIGARETTE HAVING INCORPORATED THEREIN AS A FILTER A PLUG OF SUBSTANTIALLY UNIFORM CROSS-SECTIONAL DENSITY COMPRISING CRIMPED CELLULOSE ACETATE CONTINUOUS FILAMENTS CARRYING LESS THAN ABOUT 10% OF A PLASTICIZER BASED ON
References Cited (Backward Citations)
US2222042A
Cited
US2476582A
Cited
US2789563A
Cited
US2655259A
Cited
US2794239A
Cited
US2805671A
Cited
US2804078A
Cited
US2881771A
Cited
US2750653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |