US3120849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: GE Chemicals Inc
•
Filing: 1962-11-27
•
Granted: 1964-02-11
•
Expires: 1982-11-27
Abstract
No abstract record available.
Inventors
- 👤 Guttag Alvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:18
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1669; B01D39/1676; A; A24; A24D; A24D3/00; A24D3/06; A24D3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A CIGARETTE COMPRISING TOBACCO AND A FILTER, SAID FILTER COMPRISING A PHOSPHORUS CONTAINING FOAMED POLYURETHANE, THE PHOSPHORUS BEING PRESENT AS PART OF THE POLYURETHANE MOLECULE.
Claim 2
Dependent Claim
25 words
A CIGARETTE COMPRISING TOBACCO AND A FILTER, SAID FILTER COMPRISING A PHOSPHORUS CONTAINING FOAMED POLYURETHANE, THE PHOSPHORUS BEING PRESENT AS PART OF THE POLYURETHANE MOLECULE.
References Cited (Backward Citations)
US2754829A
Cited
US2739598A
Cited
US2933460A
Cited
GB834854A
Cited
FR1232795A
Cited
US3006346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |