US2816083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of conditioning soils and conditioning agents therefor
Assignee: Eastman Kodak Co
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Filing: 1954-04-29
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Granted: 1957-12-10
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Expires: 1974-04-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Newton H Shearer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:28
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/40; C09K17/14; C09K17/18; C09K17/20; C09K17/22; C09K17/02; Y; Y10; Y10S; Y10S260/00; Y10S260/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE METHOD OF IMPROVING THE TILTH AND HYDRAULIC STABILITY OF COIL WHICH COMPRISES INCORPORATING INTO A SOIL FROM 0.001% TO 2% BY WEIGHT BASED ON THE SOIL OF AN ALKALINE SALT OF A COPOLYMER OF ABOPUT 90% BY WEIGHT OF N-ISOPROPYLACRYLAMIDE AND ABOUT 10% BY WEIGHT OF A COPOLYMERIZABLE ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND MALEIC ACID.
Claim 2
Independent Claim
61 words
THE METHOD OF IMPROVING THE TILTH AND HYDRAULIC STABILITY OF COIL WHICH COMPRISES INCORPORATING INTO A SOIL FROM 0.001% TO 2% BY WEIGHT BASED ON THE SOIL OF AN ALKALINE SALT OF A COPOLYMER OF ABOPUT 90% BY WEIGHT OF N-ISOPROPYLACRYLAMIDE AND ABOUT 10% BY WEIGHT OF A COPOLYMERIZABLE ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND MALEIC ACID.
References Cited (Backward Citations)
US2625529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |