Patent US3301680A successfully refreshed from Google Patents.
US3301680A
Expired / Lapsed
US
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Method of impregnating paper to reduce curling tendency and resultant article
Assignee: Mo och Domsjo AB
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Filing: 1964-02-07
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Granted: 1967-01-31
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Expires: 1984-02-07
Abstract
No abstract record available.
Inventors
- 👤 Nycander Oscar Bertil Otto
- 👤 Carlsson Svenning Natanael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:57
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/06; G03C1/81
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF REDUCING THE CURLING TENDENCY OF PAPER AND PAPER-LIKE MATERIALS AND PHOTOGRAPHIC PAPER, WHICH COMPRISES APPLYING TO THE PAPER AN IMPREGNATING COMPOSITION CONSISTING ESSENTIALLY OF A WATER-SOLUBLE POLYALKYLENE GLYCOL HAVING A MOLECULAR WEIGHT WITHIN THE RANGE FROM 100 TO 6000, AND WATER-SOLUBLE POLYHYDRIC ALIPHATIC ALCOHOL FACILITATING THE ABSORPTION OF THE POLYALKYLENE GLYCOL IN THE PAPER, AND HAIVNAG FROM ABOUT TWO TO ABOUT FIFTEEN CARBON ATOMS, THE POLYHYDRIC ALCOHOL BEING IN AN AMOUNT WITHIN THE RANGE FROM 0.2 TO 5 PARTS BY WEIGHT PER PART BY WEIGHT OF THE POLYALKYLENE GLYCOL.
Claim 2
Independent Claim
92 words
A METHOD OF REDUCING THE CURLING TENDENCY OF PAPER AND PAPER-LIKE MATERIALS AND PHOTOGRAPHIC PAPER, WHICH COMPRISES APPLYING TO THE PAPER AN IMPREGNATING COMPOSITION CONSISTING ESSENTIALLY OF A WATER-SOLUBLE POLYALKYLENE GLYCOL HAVING A MOLECULAR WEIGHT WITHIN THE RANGE FROM 100 TO 6000, AND WATER-SOLUBLE POLYHYDRIC ALIPHATIC ALCOHOL FACILITATING THE ABSORPTION OF THE POLYALKYLENE GLYCOL IN THE PAPER, AND HAIVNAG FROM ABOUT TWO TO ABOUT FIFTEEN CARBON ATOMS, THE POLYHYDRIC ALCOHOL BEING IN AN AMOUNT WITHIN THE RANGE FROM 0.2 TO 5 PARTS BY WEIGHT PER PART BY WEIGHT OF THE POLYALKYLENE GLYCOL.
References Cited (Backward Citations)
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |