Patent US2637665A successfully refreshed from Google Patents.
US2637665A
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Impregnated paper and method of making same
Assignee: Highland Manufacturing Co Ltd
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Filing: 1950-07-20
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Granted: 1953-05-05
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Expires: 1970-07-20
Abstract
No abstract record available.
Inventors
- 👤 Lloyd L Dodge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:24
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/60; D21H17/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE METHOD OF TREATING A PAPER STOCK TO CONDITION THE SAME FOR RECEIVING PRINTING INKS AND WATER-PROOFING COMPOSITIONS, WHICH COMPRISES IMPREGNATING SAID PAPER STOCK WITH AN AQUEOUS SIZING COMPOSITION HAVING A SOLIDS CONTENT CONSISTING ESSENTIALLY OF FROM 20 TO 50% OF A HYDROGENATED METHYL ESTER OF ROSIN, FROM 20 TO 50% OF A GLYCEROL ESTER OF HYDROGENATED ROSIN AND FROM 20 TO 50% OF PARAFFIN WAX, AND DRYING THE PAPER.
Claim 2
Independent Claim
70 words
THE METHOD OF TREATING A PAPER STOCK TO CONDITION THE SAME FOR RECEIVING PRINTING INKS AND WATER-PROOFING COMPOSITIONS, WHICH COMPRISES IMPREGNATING SAID PAPER STOCK WITH AN AQUEOUS SIZING COMPOSITION HAVING A SOLIDS CONTENT CONSISTING ESSENTIALLY OF FROM 20 TO 50% OF A HYDROGENATED METHYL ESTER OF ROSIN, FROM 20 TO 50% OF A GLYCEROL ESTER OF HYDROGENATED ROSIN AND FROM 20 TO 50% OF PARAFFIN WAX, AND DRYING THE PAPER.
References Cited (Backward Citations)
US1803816A
Cited
US2065925A
Cited
US2117256A
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US2130530A
Cited
US2142039A
Cited
US2357917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |