US3261798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper treating solution of an alphaolefin/maleic anhydride copolymer and a bisulfite
Assignee: Monsanto Co
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Filing: 1964-11-12
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Granted: 1966-07-19
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Expires: 1984-11-12
Abstract
No abstract record available.
Inventors
- 👤 Charles P Farley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:37
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/41; D21H17/42; D21H17/43; C; C08; C08K; C08K3/00; C08K3/30; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A COMPOSITION COMPRISING (1) AN AQUEOUS BASIC SOLUTION OF AN ALIPHATIC ALKENE ALPHA-OLEFIN/MALEIC ANHYDRIDE COPOLYMER HAVING AN OLEFIN TO MALEIC ANHYDRIDE MOLAR RATIO OF FROM ABOUT 1:1 TO ABOUT 1:1.9 AND AN AVERAGE MOLECULAR WEIGHT OF FROM AOUT 1000 TO ABOUT 10,000, THE ALPHA-OLEFINS HAVING FROM 6 TO ABOUT 24 CARBON ATOMS, AND (2) FROM ABOUT 0.01 PERCENT TO ABOUT 5%, BASED ON THE COPOLYMER CONTENT, OF AN ALKALI METAL SALT OF AN ANION SELECTED FROM THE GROUP CONSISTING OF BISULFITE AND SULFITE.
Claim 2
Dependent Claim
83 words
A COMPOSITION COMPRISING (1) AN AQUEOUS BASIC SOLUTION OF AN ALIPHATIC ALKENE ALPHA-OLEFIN/MALEIC ANHYDRIDE COPOLYMER HAVING AN OLEFIN TO MALEIC ANHYDRIDE MOLAR RATIO OF FROM ABOUT 1:1 TO ABOUT 1:1.9 AND AN AVERAGE MOLECULAR WEIGHT OF FROM AOUT 1000 TO ABOUT 10,000, THE ALPHA-OLEFINS HAVING FROM 6 TO ABOUT 24 CARBON ATOMS, AND (2) FROM ABOUT 0.01 PERCENT TO ABOUT 5%, BASED ON THE COPOLYMER CONTENT, OF AN ALKALI METAL SALT OF AN ANION SELECTED FROM THE GROUP CONSISTING OF BISULFITE AND SULFITE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |