Patent FR1238286A successfully refreshed from Google Patents.
Patent US3006346A successfully refreshed from Google Patents.
US3006346A
Expired / Lapsed
US
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Filters for cigarettes and cigars and method of manufacturing same
Assignee: Individual
•
Filing: 1958-12-15
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Granted: 1961-10-31
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Expires: 1978-12-15
Abstract
No abstract record available.
Inventors
- 👤 Edwin I Golding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:18
CPC Classifications
A; A24; A24F; A24F13/00; A24F13/02; A24F13/04; A24F13/06; A24D; A24D3/00; A24D3/04; A24D3/06; A24D3/16; A24D3/163; Y; Y10; Y10S; Y10S55/00; Y10S55/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A FILTER COMPRISING: AT LEAST TWO LAYERS OF POROUS MATERIAL, AND A RELATIVELY THIN LAYER OF ADHESIVE HAVING OPENINGS THERETHROUGH DISPOSED BETWEEN SAID LAYERS OF POROUS MATERIAL AND ADAPTED TO BOND SAID LAYERS OF POROUS MATERIAL TOGETHER, SAID ADHESIVE LAYER COMPRISING ADSORBENT, FINELY DIVIDED MATERIAL.
Claim 2
Dependent Claim
45 words
A FILTER COMPRISING: AT LEAST TWO LAYERS OF POROUS MATERIAL, AND A RELATIVELY THIN LAYER OF ADHESIVE HAVING OPENINGS THERETHROUGH DISPOSED BETWEEN SAID LAYERS OF POROUS MATERIAL AND ADAPTED TO BOND SAID LAYERS OF POROUS MATERIAL TOGETHER, SAID ADHESIVE LAYER COMPRISING ADSORBENT, FINELY DIVIDED MATERIAL.
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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) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |