US3376874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable cigarette filters
Assignee: Individual
•
Filing: 1965-05-27
•
Granted: 1968-04-09
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Expires: 1985-05-27
Abstract
No abstract record available.
Inventors
- 👤 Kim Yunil
- 👤 Kim Namsik
- 👤 Kim Yongsik
- 👤 Kim Jeonsik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:28
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04; A24D3/041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
AN ADJUSTABLE CIGARETTE FILTER FOR REMOVING IMPURITIES, SUCH AS NICOTINE FROM SMOKE OF A CIGARETTE INSERTED IN THE FILTER, COMPRISING MOUTHPIECE MEANS DEFINING A FLUID FLOW PASSAGE FOR THE FLOW OF SAID SMOKE THERETHROUGH, TRANSVERSELY EXTENDING WALL MEANS DIVIDING SAID PASSAGE INTO FIRST AND SECOND LONGITUDINALLY DISPOSED COMMUNICATING CHAMBERS AND INCLUDING MEANS PERMITTING AN INCREASE AND DECREASE, RESPECTIVELY, IN THE FLOW VELOCITY OF SAID SMOKE, WHEN PASSING FROM ONE CHAMBER TO THE OTHER, FILTER MEANS IN AT LEAST ONE OF SAID CHAMBERS, AND ADJUSTABLE RESTRICTING MEANS IN SAID WALL MEANS FOR SELECTIVELY AND MANUALLY ADJUSTING THE CROSS-SECTION OF SAID PASSAGE, WHEREBY VARIOUS DEGREES OF SAID FLOW VELOCITY CAN BE ADJUSTED FOR A CONTROL FILTRATION OF SAID SMOKE.
Claim 2
Dependent Claim
117 words
AN ADJUSTABLE CIGARETTE FILTER FOR REMOVING IMPURITIES, SUCH AS NICOTINE FROM SMOKE OF A CIGARETTE INSERTED IN THE FILTER, COMPRISING MOUTHPIECE MEANS DEFINING A FLUID FLOW PASSAGE FOR THE FLOW OF SAID SMOKE THERETHROUGH, TRANSVERSELY EXTENDING WALL MEANS DIVIDING SAID PASSAGE INTO FIRST AND SECOND LONGITUDINALLY DISPOSED COMMUNICATING CHAMBERS AND INCLUDING MEANS PERMITTING AN INCREASE AND DECREASE, RESPECTIVELY, IN THE FLOW VELOCITY OF SAID SMOKE, WHEN PASSING FROM ONE CHAMBER TO THE OTHER, FILTER MEANS IN AT LEAST ONE OF SAID CHAMBERS, AND ADJUSTABLE RESTRICTING MEANS IN SAID WALL MEANS FOR SELECTIVELY AND MANUALLY ADJUSTING THE CROSS-SECTION OF SAID PASSAGE, WHEREBY VARIOUS DEGREES OF SAID FLOW VELOCITY CAN BE ADJUSTED FOR A CONTROL FILTRATION OF SAID SMOKE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |