US2706186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions comprising a polymer of acrylamide and an ether
Assignee: Wyeth Holdings LLC
•
Filing: 1954-06-22
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Granted: 1955-04-12
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Expires: 1974-06-22
Abstract
No abstract record available.
Inventors
- 👤 Henry Z Friedlander
- 👤 William A Barber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:52
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/156; C08K5/1575; C08K5/16; C08K5/34; C08K5/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A COMPOSITION OF MATTER COMPRISING (1) A POLYMERIZATION PRODUCT CONTAINING IN THE POLYMER MOLECULES AN AVERAGE OF AT LEAST 75% BY WEIGHT OF COMBINED ACRYLAMIDE AND (2) AN ETHER SELECTED FROM THE CLASS CONSISTING OF DIOXOLANE AND MORPHOLINE.
Claim 2
Dependent Claim
38 words
A COMPOSITION OF MATTER COMPRISING (1) A POLYMERIZATION PRODUCT CONTAINING IN THE POLYMER MOLECULES AN AVERAGE OF AT LEAST 75% BY WEIGHT OF COMBINED ACRYLAMIDE AND (2) AN ETHER SELECTED FROM THE CLASS CONSISTING OF DIOXOLANE AND MORPHOLINE.
References Cited (Backward Citations)
US2340907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-11 | 1958-10-11 | 1959-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-11 | 1962-10-11 | 1963-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-11 | 1966-10-11 | 1967-04-12 | $7700.00 | Window Closed / Lapsed |