Patent US2954614A successfully refreshed from Google Patents.
Patent US2680110A successfully refreshed from Google Patents.
US2680110A
Expired / Lapsed
US
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Copolymers of nu-methylol acrylamide
Assignee: Wyeth Holdings LLC
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Filing: 1952-04-17
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Granted: 1954-06-01
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Expires: 1972-04-17
Abstract
No abstract record available.
Inventors
- 👤 Gerard A Loughran
- 👤 James R Dudley
- 👤 Edward L Kropa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:19
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
AN AQUEOUS EMULSION COPOLYMER OF FROM 2 TO 85% BY WEIGHT OF N-METHYLOL ACRYLAMIDE AND CORRESPONDINGLY FROM 98 TO 5% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL ACRYLATES, DIALKYL FUMARATES, DIALKYL MALEATES, N-ALKYL ACRYLAMIDES, AND N,N-DIALKYL ACRYLAMIDES, THE DIALKYL COMPOUNDS CONTAINING LIKE ALKYL GROUPS AND WHEREIN THE ALKYL GROUP OF EACH COMPOUND CONTAINS A TOTAL OF FROM 8 TO 18 CARBON ATOMS.
Claim 2
Dependent Claim
67 words
AN AQUEOUS EMULSION COPOLYMER OF FROM 2 TO 85% BY WEIGHT OF N-METHYLOL ACRYLAMIDE AND CORRESPONDINGLY FROM 98 TO 5% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL ACRYLATES, DIALKYL FUMARATES, DIALKYL MALEATES, N-ALKYL ACRYLAMIDES, AND N,N-DIALKYL ACRYLAMIDES, THE DIALKYL COMPOUNDS CONTAINING LIKE ALKYL GROUPS AND WHEREIN THE ALKYL GROUP OF EACH COMPOUND CONTAINS A TOTAL OF FROM 8 TO 18 CARBON ATOMS.
References Cited (Backward Citations)
GB467492A
Cited
US2173005A
Cited
US2146209A
Cited
FR827059A
Cited
US2598663A
Cited
US2552329A
Cited
US2584968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |