Patent US482658A successfully refreshed from Google Patents.
Patent US2774692A successfully refreshed from Google Patents.
US2774692A
Expired / Lapsed
US
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Coated fibrous products and methods of making them
Assignee: Rohm and Haas Co
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Filing: 1954-06-16
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Granted: 1956-12-18
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Expires: 1974-06-16
Abstract
No abstract record available.
Inventors
- 👤 James P Shelley
- 👤 Jr Earl M Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:49
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD FOR PRODUCING A COATED PAPER PRODUCT HAVING HIGH GLOSS COMPRISING APPLYING TO THE PAPER AN AQUEOUS DISPERSION CONTAINING A WATER-SOLUBLE HIGH MOLECULAR WEIGHT CONDENSATE OF A MIXTURE COMPRISING THE DICARBAMATE OF DIETHYLENE GLYCOL AND FORMALDEHYDE, IN WHICH THE MOLAR RATIO OF FORMALDEHYDE TO THE DICARBAMATE IS FROM 2:1 TO 3.5:1, SAID CONDENSATE HAVING A VISCOSITY, AT A CONCENTRATION 60% IN WATER AT 25* C., OF 2 TO 25 POISES, DRYING, AND CURING THE COATING TO A WATER-INSOLUBLE CONDITION.
Claim 2
Independent Claim
80 words
A METHOD FOR PRODUCING A COATED PAPER PRODUCT HAVING HIGH GLOSS COMPRISING APPLYING TO THE PAPER AN AQUEOUS DISPERSION CONTAINING A WATER-SOLUBLE HIGH MOLECULAR WEIGHT CONDENSATE OF A MIXTURE COMPRISING THE DICARBAMATE OF DIETHYLENE GLYCOL AND FORMALDEHYDE, IN WHICH THE MOLAR RATIO OF FORMALDEHYDE TO THE DICARBAMATE IS FROM 2:1 TO 3.5:1, SAID CONDENSATE HAVING A VISCOSITY, AT A CONCENTRATION 60% IN WATER AT 25* C., OF 2 TO 25 POISES, DRYING, AND CURING THE COATING TO A WATER-INSOLUBLE CONDITION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |