Patent US5536962A successfully refreshed from Google Patents.
Patent US3335733A successfully refreshed from Google Patents.
US3335733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke filter
Assignee: Individual
•
Filing: 1965-03-15
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Granted: 1967-08-15
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Expires: 1985-03-15
Abstract
No abstract record available.
Inventors
- 👤 John M Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:01
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04; A24D3/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN A SMOKE FILTER FOR CIGARETTE AND OTHER SMOKERS''S ARTICLE: (A) AN ARRANGEMENT OF SPACED AND ADJACENT FILTER ELEMENTS ARRANGED ABOUT A LONGITUDINAL CENTER LINE, EACH OF SAID ELEMENTS BEING OF SOLID FLAT MEMBER. (B) THERE BEING AT LEAST TWO SPACED FILTER DISC ELEMENTS, ONE OF SAID FILTER ELEMENTS HAVING A PLURALITY OF SMALL SPACED OPENINGS RADIALLY PLACED CLOSER TO THE OUTER PERIPHERY THEREOF AND SPACED FROM EACH OTHER, (C) THE OTHER OF SAID FILTER ELEMENTS HAVING A NUMBER OF SMALL OPENINGS LOCATED CLOSER TO THE CENTER AND OUT OF ALIGNMENT WITH THE OPENINGS IN (B), (D) A NON-POROUS COVER OVER SAID FILTER ELEMENTS WHICH ARE SPACED FROM EACH OTHER TO FORM IN ASSEMBLED CONDITION COMPARTMENT SPACES THEREBETWEEN OF SMALL DIMENSIONS, WHEREBY SAID SMOKE IS DIRECTED IN OTHER THAN STRAIGHT LINES THROUGH COMPARTMENT SPACES.
Claim 2
Dependent Claim
134 words
IN A SMOKE FILTER FOR CIGARETTE AND OTHER SMOKERS''S ARTICLE: (A) AN ARRANGEMENT OF SPACED AND ADJACENT FILTER ELEMENTS ARRANGED ABOUT A LONGITUDINAL CENTER LINE, EACH OF SAID ELEMENTS BEING OF SOLID FLAT MEMBER. (B) THERE BEING AT LEAST TWO SPACED FILTER DISC ELEMENTS, ONE OF SAID FILTER ELEMENTS HAVING A PLURALITY OF SMALL SPACED OPENINGS RADIALLY PLACED CLOSER TO THE OUTER PERIPHERY THEREOF AND SPACED FROM EACH OTHER, (C) THE OTHER OF SAID FILTER ELEMENTS HAVING A NUMBER OF SMALL OPENINGS LOCATED CLOSER TO THE CENTER AND OUT OF ALIGNMENT WITH THE OPENINGS IN (B), (D) A NON-POROUS COVER OVER SAID FILTER ELEMENTS WHICH ARE SPACED FROM EACH OTHER TO FORM IN ASSEMBLED CONDITION COMPARTMENT SPACES THEREBETWEEN OF SMALL DIMENSIONS, WHEREBY SAID SMOKE IS DIRECTED IN OTHER THAN STRAIGHT LINES THROUGH COMPARTMENT SPACES.
References Cited (Backward Citations)
US2728346A
Cited
US3292635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |