US2798058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions comprising a homopolymer of acrylamide and an organic acid
Assignee: Wyeth Holdings LLC
•
Filing: 1954-06-22
•
Granted: 1957-07-02
•
Expires: 1974-06-22
Abstract
No abstract record available.
Inventors
- 👤 William A Barber
- 👤 Henry Z Friedlander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/095
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A COMPOSITION OF MATTER COMPRISING (1) HOMOPOLYMERIC ACRYLAMIDE AND (2) AT LEAST ONE ACID SELECTED FROM THE CLASS CONSISTING OF GLACIAL ACETIC ACID, CHLOROACETIC ACIDS, PROPIONIC ACID, ACRYLIC ACID, GLYCOLIC ACID AND LACTIC ACID.
Claim 2
Dependent Claim
34 words
A COMPOSITION OF MATTER COMPRISING (1) HOMOPOLYMERIC ACRYLAMIDE AND (2) AT LEAST ONE ACID SELECTED FROM THE CLASS CONSISTING OF GLACIAL ACETIC ACID, CHLOROACETIC ACIDS, PROPIONIC ACID, ACRYLIC ACID, GLYCOLIC ACID AND LACTIC ACID.
References Cited (Backward Citations)
US2735831A
Cited
US2173005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |