Patent US3065193A successfully refreshed from Google Patents.
US3065193A
Expired / Lapsed
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Aqueous solutions of polyacrylamide stabilized with water soluble nitrite
Assignee: Dow Chemical Co
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Filing: 1961-02-27
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Granted: 1962-11-20
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Expires: 1981-02-27
Abstract
No abstract record available.
Inventors
- 👤 Volk Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:45
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/22; C; C08; C08K; C08K3/00; C08K3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A COMPOSITION OF MATTER COMPRISING AN AQUEOUS SOLUTION OF AN ACRYLAMIDE POLYMER HAVING DISSOLVED THEREIN FROM ABOUT 0.1 TO ABOUT 8 WEIGHT PERCENT OF A WATER-SOLUBLE NITRITE BASED ON THE WEIGHT OF THE POLYMER.
Claim 2
Dependent Claim
34 words
A COMPOSITION OF MATTER COMPRISING AN AQUEOUS SOLUTION OF AN ACRYLAMIDE POLYMER HAVING DISSOLVED THEREIN FROM ABOUT 0.1 TO ABOUT 8 WEIGHT PERCENT OF A WATER-SOLUBLE NITRITE BASED ON THE WEIGHT OF THE POLYMER.
References Cited (Backward Citations)
US2879257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |