US2945322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection of soil in agricultural cultivation
Assignee: BASF SE
•
Filing: 1957-12-18
•
Granted: 1960-07-19
•
Expires: 1977-12-18
Abstract
No abstract record available.
Inventors
- 👤 Gaeth Rudolf
- 👤 Graf Fritz
- 👤 Huppert Valentin
- 👤 Wurzschmitt Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:26
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/14; C09K17/18; C09K17/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR PROTECTION OF SOIL IN AGRICULTURAL CULTIVATION WHICH COMPRISES COVERING THE SURFACE OF SAID SOIL WITH A LAYER OF A FORMED AQUEOUS SOLUTION OF ABOUT 15 TO 35% BY WEIGHT OF A WATER-SOLUBLE, HARDENABLE AMINOPLAST RESIN, SAID SOLUTION CONTAINING AN ACID HARDENING AGENT AND A SURFACE-ACTIVE WETTING AGENT, AND HARDENING THE FOAMED LAYER BY CONDENSATION OF SAID RESIN TO FORM A POROUS SOLID COVERING OVER THE SURFACE OF SAID SOIL.
Claim 2
Dependent Claim
72 words
A PROCESS FOR PROTECTION OF SOIL IN AGRICULTURAL CULTIVATION WHICH COMPRISES COVERING THE SURFACE OF SAID SOIL WITH A LAYER OF A FORMED AQUEOUS SOLUTION OF ABOUT 15 TO 35% BY WEIGHT OF A WATER-SOLUBLE, HARDENABLE AMINOPLAST RESIN, SAID SOLUTION CONTAINING AN ACID HARDENING AGENT AND A SURFACE-ACTIVE WETTING AGENT, AND HARDENING THE FOAMED LAYER BY CONDENSATION OF SAID RESIN TO FORM A POROUS SOLID COVERING OVER THE SURFACE OF SAID SOIL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |