Patent US3380458A successfully refreshed from Google Patents.
US3380458A
Expired / Lapsed
US
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Method for producing a cigarette with low tar yield
Assignee: Eastman Kodak Co
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Filing: 1966-02-15
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Granted: 1968-04-30
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Expires: 1986-02-15
Abstract
No abstract record available.
Inventors
- 👤 George P Touey
- 👤 Ii Robert C Mumpower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:45
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/18; A24B15/28; A24B15/287
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A SMOKING PRODUCT CONSISTING ESSENTIALLY OF NATURAL TOBACCO LEAF MATERIAL, THE IMPROVEMENT WHICH COMPRISES ADDING THERETO 5.5 TO 10 PERCENT BY WEIGHT OF A NITRIC ACID SALT SELECTED FROM THE GROUP CONSISTING OF THE NITRIC ACID SALT OF SODIUM, NITRIC ACID SALT OF POTASSIUM, OR MIXTURES THEREOF, SAID SALT BEING INTERMIXED WITH SAID LEAF MATERIAL FOR REDUCING AT LEAST PARTIALLY THE SMOKE CONDENSATE PRODUCTS PRODUCED WHEN THE LEAF MATERIAL IS SMOKED.
Claim 2
Dependent Claim
72 words
IN A SMOKING PRODUCT CONSISTING ESSENTIALLY OF NATURAL TOBACCO LEAF MATERIAL, THE IMPROVEMENT WHICH COMPRISES ADDING THERETO 5.5 TO 10 PERCENT BY WEIGHT OF A NITRIC ACID SALT SELECTED FROM THE GROUP CONSISTING OF THE NITRIC ACID SALT OF SODIUM, NITRIC ACID SALT OF POTASSIUM, OR MIXTURES THEREOF, SAID SALT BEING INTERMIXED WITH SAID LEAF MATERIAL FOR REDUCING AT LEAST PARTIALLY THE SMOKE CONDENSATE PRODUCTS PRODUCED WHEN THE LEAF MATERIAL IS SMOKED.
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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |