US2580608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forming cigarette paper
Assignee: Ecusta Paper Corp
•
Filing: 1946-04-25
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Granted: 1952-01-01
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Expires: 1966-04-25
Abstract
No abstract record available.
Inventors
- 👤 Milton O Schur
- 👤 Robert M Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:28
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/14; D21H5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
THE PROCESS FOR PRODUCING CIGARETTE PAPER WHICH WHEN BURNED AS THE WRAPPER ON A CIGARETTE WILL PRODUCE A CLINING, GRAYISH-WHITE, ASH THAT IS SUFFICIENTLY COHESIVE AND INTEGRATED TO AVOID FREQUENT ACCIDENTAL DROPPING OF THE ASH, COMPRISING INCORPORATING IN THE CIGARETTE PAPER FURNISH JUST PRIOR TO SHEETING THEREOF ON A CIGARETTE PAPER MAKING MACHINE AND WHICH FURNISH CONTAINS PREDOMINANTLY CELLULOSIC FIBERS AND CALCIUM CARBONATE FILLER, APPROXIMATELY 1/2 TO 5% OF SODIUM HYDROXIDE AND PHOSPHORIC ACID IN AN AMOUNT OF ABOUT 1/2 TO ABOUT 5%, BASED UPON THE WEIGHT OF THE FIBER AND IN AN AMOUNT NOT GREATER THAN THE AMOUNT OF SODIUM HYDROXIDE, AND THEN SHEETING THIS FURNISH ON THE PAPER MACHINE AND DRYING THE RESULTING CIGARETTE PAPER SHEET IN SUCH A MANNER THAT THE FINISHED CIGARETTE PAPER CONTAINS A SUBSTANTIAL AMOUNT OF THE REACTION PRODUCTS OF SAID SODIUM HYDROXIDE AND PHOSPHORIC ACID.
Claim 2
Dependent Claim
142 words
THE PROCESS FOR PRODUCING CIGARETTE PAPER WHICH WHEN BURNED AS THE WRAPPER ON A CIGARETTE WILL PRODUCE A CLINING, GRAYISH-WHITE, ASH THAT IS SUFFICIENTLY COHESIVE AND INTEGRATED TO AVOID FREQUENT ACCIDENTAL DROPPING OF THE ASH, COMPRISING INCORPORATING IN THE CIGARETTE PAPER FURNISH JUST PRIOR TO SHEETING THEREOF ON A CIGARETTE PAPER MAKING MACHINE AND WHICH FURNISH CONTAINS PREDOMINANTLY CELLULOSIC FIBERS AND CALCIUM CARBONATE FILLER, APPROXIMATELY 1/2 TO 5% OF SODIUM HYDROXIDE AND PHOSPHORIC ACID IN AN AMOUNT OF ABOUT 1/2 TO ABOUT 5%, BASED UPON THE WEIGHT OF THE FIBER AND IN AN AMOUNT NOT GREATER THAN THE AMOUNT OF SODIUM HYDROXIDE, AND THEN SHEETING THIS FURNISH ON THE PAPER MACHINE AND DRYING THE RESULTING CIGARETTE PAPER SHEET IN SUCH A MANNER THAT THE FINISHED CIGARETTE PAPER CONTAINS A SUBSTANTIAL AMOUNT OF THE REACTION PRODUCTS OF SAID SODIUM HYDROXIDE AND PHOSPHORIC ACID.
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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) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |