US2898320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for conditioning soil with a polymer containing n-methylol substituents
Assignee: Wyeth Holdings LLC
•
Filing: 1953-05-21
•
Granted: 1959-08-04
•
Expires: 1973-05-21
Abstract
No abstract record available.
Inventors
- 👤 Sprague George Sidney
- 👤 Henry Z Friedlander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:00
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/14; C09K17/18; C09K17/20; C09K17/22; B; B09; B09C; B09C1/00; B09C1/08; C05; C05G; C05G3/00; C05G3/80; C09K17/32; C09K17/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A PROCESS FOR CONDITIONING SOIL COMPRISING ADMIXING SAID SOIL WITH A NON-ELECTROLYTE, WATERR-SOLUBLE, POLYMERIZED MATERIAL HAVING A WEIGHT AVERAGE MOLECULAR WEIGHT OF AT LEAST 2,500, SAID POLYMERIZED MATERIAL BEING SELECTED FROM THE GROUP CONSISTING OF THE POLYMERIZATION PRODUCT OF A POLYMERIZABLE MONOMER CONTAINING A CH2=C< GROUP, MALEIC DIMETHYLOL AMIDE, MALEIC DIAMIDE AND MALEIC ANHYDRIDE, SAID POLYMERIZED MATERIAL CONTAINING METHYLOL AMIDE RADICALS ATTACHED TO AT LEAST 5% OF THE CARBON ATOMS IN THE POLYMER CHAIN COMPOSED OF LINKED CARBON ATOMS, THEREBY FORMING A POROUS SOIL STRUCTURE OF NON-CAKING, DISCRETE PARTICLES WHICH ARE READILY PENETRABLE BY WATER BUT RESISTANT TO EROSION.
Claim 2
Dependent Claim
99 words
A PROCESS FOR CONDITIONING SOIL COMPRISING ADMIXING SAID SOIL WITH A NON-ELECTROLYTE, WATERR-SOLUBLE, POLYMERIZED MATERIAL HAVING A WEIGHT AVERAGE MOLECULAR WEIGHT OF AT LEAST 2,500, SAID POLYMERIZED MATERIAL BEING SELECTED FROM THE GROUP CONSISTING OF THE POLYMERIZATION PRODUCT OF A POLYMERIZABLE MONOMER CONTAINING A CH2=C< GROUP, MALEIC DIMETHYLOL AMIDE, MALEIC DIAMIDE AND MALEIC ANHYDRIDE, SAID POLYMERIZED MATERIAL CONTAINING METHYLOL AMIDE RADICALS ATTACHED TO AT LEAST 5% OF THE CARBON ATOMS IN THE POLYMER CHAIN COMPOSED OF LINKED CARBON ATOMS, THEREBY FORMING A POROUS SOIL STRUCTURE OF NON-CAKING, DISCRETE PARTICLES WHICH ARE READILY PENETRABLE BY WATER BUT RESISTANT TO EROSION.
References Cited (Backward Citations)
BE501726A
Cited
US2173005A
Cited
GB482897A
Cited
US2314181A
Cited
US2492212A
Cited
US2541005A
Cited
US2598663A
Cited
US2616818A
Cited
US2625529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |