US3311532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ketene dimer paper sizing compositions including acyl compound extender and paper sized therewith
Assignee: Wyeth Holdings LLC
•
Filing: 1965-03-17
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Granted: 1967-03-28
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Expires: 1985-03-17
Abstract
No abstract record available.
Inventors
- 👤 Kulick Russell Joseph
- 👤 Strazdins Edward
- 👤 Savina Anthony Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:28
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/17
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
37 words
A COMPOSITION CONSISTING ESSENTIALLY OF A PAPERSIZING KETENE DIMER AND AN EFFECTIVE EXTENDING AMOUNT IN EXCESS OF ABOUT 10%, BASED ON THE WEIGHT THEREOF, OF A HYDROPHOBIC SUBSTANTIALLY WATER-INSOLUBLE SATURATED SUBSTANTIALLY STRAIGHT-CHAIN ACYL COMPOUND AS EXTENDER THEREFOR.
Claim 2
Dependent Claim
37 words
A COMPOSITION CONSISTING ESSENTIALLY OF A PAPERSIZING KETENE DIMER AND AN EFFECTIVE EXTENDING AMOUNT IN EXCESS OF ABOUT 10%, BASED ON THE WEIGHT THEREOF, OF A HYDROPHOBIC SUBSTANTIALLY WATER-INSOLUBLE SATURATED SUBSTANTIALLY STRAIGHT-CHAIN ACYL COMPOUND AS EXTENDER THEREFOR.
Claim 3
Dependent Claim
71 words
PAPER COMPOSED OF CELLULOSE FIBERS SIZED BY A UNIFORMLY DISTRIBUTED REACTED CONTENT OF A PAPER SIZING KETENE DIMER AND BY AN EFFECTIVE UNIFORMLY DISTRIBUTED UNREACTED CONTENT, WITHIN THE RANGE OF FROM 10% TO ABOUT 200% OF THE WEIGHT OF SAID KETENE DIMER, OF A HYDROPHOBIC SUBSTANTIALLY WATER-INSOLUBLE SATURATED SUBSTANTIALLY STRAIGHT-CHAIN ACYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF HIGHER FATTY ACIDS AND THEIR ANHYDRIDES, CHLORIDES, AMIDES AND ALDEHYDES AS EXTENER THEREFOR.
Claim 4
Dependent Claim
71 words
PAPER COMPOSED OF CELLULOSE FIBERS SIZED BY A UNIFORMLY DISTRIBUTED REACTED CONTENT OF A PAPER SIZING KETENE DIMER AND BY AN EFFECTIVE UNIFORMLY DISTRIBUTED UNREACTED CONTENT, WITHIN THE RANGE OF FROM 10% TO ABOUT 200% OF THE WEIGHT OF SAID KETENE DIMER, OF A HYDROPHOBIC SUBSTANTIALLY WATER-INSOLUBLE SATURATED SUBSTANTIALLY STRAIGHT-CHAIN ACYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF HIGHER FATTY ACIDS AND THEIR ANHYDRIDES, CHLORIDES, AMIDES AND ALDEHYDES AS EXTENER THEREFOR.
References Cited (Backward Citations)
US2901371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |