Patent US2786786A successfully refreshed from Google Patents.
US2786786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture resistant paper
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1953-05-14
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Granted: 1957-03-26
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Expires: 1973-05-14
Abstract
No abstract record available.
Inventors
- 👤 Leo J Novak
- 👤 Joseph T Tyree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:26
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/21; D21H17/24; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
CALENDERED PAPER CHARAZCTERIZED BY INCREASED MOISTURE RESISTANCE IMPARTED THERETO BY AN ADHERENT COATING THEREON CONSISTING ESSENTIALLY OF AN ESTER OF A DEXTRAN HAVING, INITIALLY, AT LEAST SOME FREE HYDROXYL GROUPS, WITH A FATTY ACID CONTAINING FROM 8 TO 18 CARBON ATOMS.
Claim 2
Dependent Claim
41 words
CALENDERED PAPER CHARAZCTERIZED BY INCREASED MOISTURE RESISTANCE IMPARTED THERETO BY AN ADHERENT COATING THEREON CONSISTING ESSENTIALLY OF AN ESTER OF A DEXTRAN HAVING, INITIALLY, AT LEAST SOME FREE HYDROXYL GROUPS, WITH A FATTY ACID CONTAINING FROM 8 TO 18 CARBON ATOMS.
References Cited (Backward Citations)
US2386994A
Cited
US2503624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |