Patent JPS5777936A successfully refreshed from Google Patents.
US3056757A
Expired / Lapsed
US
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Soil having incorporated therein an aqueous gel of bisacrylamide polymer and water soluble metal salt
Assignee: Wyeth Holdings LLC
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Filing: 1959-10-14
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Granted: 1962-10-02
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Expires: 1979-10-14
Abstract
No abstract record available.
Inventors
- 👤 David H Rakowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:17
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/56; C08K; C08K3/00; C08K3/10; Y; Y10; Y10S; Y10S47/00; Y10S47/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
SOIL HAVING INCORPORATED THEREIN A GELLED AQUEOUS SOLUTION OF A COPOLYMER OF (1) FROM ABOUT 80% TO 99.5% BY WEIGHT OF A POLYMERIZABLE MONOETHYLENIC ACRYLAMIDE MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLAMIDE, METHYACRYLAMIDE AND N-METHYLOLACRYLAMIDE AND (2) CORRESPONDING FROM ABOUT 20% TO 0.5% BY WEIGHT OF A POLYMERIZABLE ALKYLIDENE BISACRYLAMIDE MONOMER, SAID GELLED AQUEOUS SOLUTION CONTAINING AN INORGANIC, HYDRATED, WATER-SOLUBLE METAL SALT, WHEREIN SAID METAL IS SELECTED FROM THE GROUP CONSISTING OF ALKALI EARTH METALS, ALUMINUM AND CHROMIUM AND SAID SALT BEING PRESENT IN A WEIGHT RATIO OF COPOLYMER TO SALT IN THE RANGE BETWEEN ABOUT 1:1.5 TO 1:12 RESPECTIVELY.
Claim 2
Dependent Claim
101 words
SOIL HAVING INCORPORATED THEREIN A GELLED AQUEOUS SOLUTION OF A COPOLYMER OF (1) FROM ABOUT 80% TO 99.5% BY WEIGHT OF A POLYMERIZABLE MONOETHYLENIC ACRYLAMIDE MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLAMIDE, METHYACRYLAMIDE AND N-METHYLOLACRYLAMIDE AND (2) CORRESPONDING FROM ABOUT 20% TO 0.5% BY WEIGHT OF A POLYMERIZABLE ALKYLIDENE BISACRYLAMIDE MONOMER, SAID GELLED AQUEOUS SOLUTION CONTAINING AN INORGANIC, HYDRATED, WATER-SOLUBLE METAL SALT, WHEREIN SAID METAL IS SELECTED FROM THE GROUP CONSISTING OF ALKALI EARTH METALS, ALUMINUM AND CHROMIUM AND SAID SALT BEING PRESENT IN A WEIGHT RATIO OF COPOLYMER TO SALT IN THE RANGE BETWEEN ABOUT 1:1.5 TO 1:12 RESPECTIVELY.
References Cited (Backward Citations)
US2801985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |