Patent US3091028A successfully refreshed from Google Patents.
Patent US3002860A successfully refreshed from Google Patents.
US3002860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper sized with nitreous salt of maleic anhydride - styrene copolymer and epoxy resin mixture
Assignee: Monsanto Chemicals Ltd
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Filing: 1959-04-16
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Granted: 1961-10-03
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Expires: 1979-04-16
Abstract
No abstract record available.
Inventors
- 👤 Charles F Bishop
- 👤 Oscar P Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:38
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/35; D21H17/03; D21H17/05; D21H17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD WHICH COMPRISES WETTING PAPER WITH A DILUTE AQUEOUS SOLUTION CONTAINING 75-95 PARTS BY WEIGHT OF A VOLATILE NITROGENOUS BASE SALT OF A MALEIC COPOLYMER AND, CORRESPONDINGLY, 25-5 PARTS BY WEIGHT OF A WATERSOLUBLE POLYGLYCIDYL ETHER OF A POLYHYDRIC ALCOHOL AND SUBSEQUENTLY DRYING SAID PAPER AT A TEMPERATURE OF AT LEAST ABOUT 190*F., SAID MALEIC COPOLYMER BEING AN ESSENTIALLY EQUIMOLAR COPOLYMER OF A MONOVINYLIDENE AROMATIC HYDROCARBON MONOMER OF THE GROUP CONSISTING OF STYRENE, AR-SUBSTITUTED ALKYLSTYRENES AND MIXTURES THEREOF AND A MALEIC MONOMER OF THE GROUP CONSISTING OF MALEIC ANHYDRIDE, MALEIC ACID, HALF ALKYL ESTERS OF MALEIC ACID IN WHICH THE ALKYL GROUP CONTAINS 1-8 CARBON ATOMS, AND MIXTURES THEREOF, SAID WATER-SOLUBLE POLYGLYCIDYL ETHER OF A POLYHYDRIC ALCOHOL CONFORMING TO THE FORMULA:
Claim 2
Independent Claim
122 words
THE METHOD WHICH COMPRISES WETTING PAPER WITH A DILUTE AQUEOUS SOLUTION CONTAINING 75-95 PARTS BY WEIGHT OF A VOLATILE NITROGENOUS BASE SALT OF A MALEIC COPOLYMER AND, CORRESPONDINGLY, 25-5 PARTS BY WEIGHT OF A WATERSOLUBLE POLYGLYCIDYL ETHER OF A POLYHYDRIC ALCOHOL AND SUBSEQUENTLY DRYING SAID PAPER AT A TEMPERATURE OF AT LEAST ABOUT 190*F., SAID MALEIC COPOLYMER BEING AN ESSENTIALLY EQUIMOLAR COPOLYMER OF A MONOVINYLIDENE AROMATIC HYDROCARBON MONOMER OF THE GROUP CONSISTING OF STYRENE, AR-SUBSTITUTED ALKYLSTYRENES AND MIXTURES THEREOF AND A MALEIC MONOMER OF THE GROUP CONSISTING OF MALEIC ANHYDRIDE, MALEIC ACID, HALF ALKYL ESTERS OF MALEIC ACID IN WHICH THE ALKYL GROUP CONTAINS 1-8 CARBON ATOMS, AND MIXTURES THEREOF, SAID WATER-SOLUBLE POLYGLYCIDYL ETHER OF A POLYHYDRIC ALCOHOL CONFORMING TO THE FORMULA:
References Cited (Backward Citations)
US2913356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |