Patent US2553842A successfully refreshed from Google Patents.
US3112296A
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Copolymers of nu-substituted amides of the acrylic acid series
Assignee: BASF Schweiz AG
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Filing: 1960-06-07
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Granted: 1963-11-26
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Expires: 1980-06-07
Abstract
No abstract record available.
Inventors
- 👤 Maeder Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:51
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/06; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/046; A61K8/18; A61K8/72; A61K8/81; A61K8/8141; A61K8/8158; C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/56; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F8/00; C08F8/14; C08F8/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
A PROCESS OF PREPARING A LINEAR ADDITIVE COPOLYMER FROM A PLURALITY OF MONOMERS, WHICH PROCESS IS CHARACTERIZED BY (A) POLYMERIZING WITH HEATING, IN SOLUTION IN A WATER-SOLUBLE SATURATED ALIPHATIC ALCOHOL CONTAINING 1 TO 3 CARBON ATOMS, (1) 5 TO 95 PERCENT, CALCULATED ON THE TOTAL WEIGHT OF MONOMERS, OF A MONOETHYLENICALLY UNSATURATED ESTER OF (A) A MONOETHYLENICALLY UNSATURATED LOWER ALIPHATIC CARBOXYLIC ACID CONTAINING 3 TO 5 CARBON ATOMS AND (B) A SATURATED ALIPHATIC MONOHYDRIC ALCOHOL CONTAINING 1 TO 12 CARBON ATOMS, AND (2) 95 TO 5 PERCENT, CALCULATED ON THE TOTAL WEIGHT OF MONOMERS, OF AN N-SUBSTITUTED AMIDE OF THE FORMULA
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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) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |