US2916855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of soil by fumigant and foam
Assignee: Dow Chemical Co
•
Filing: 1958-10-10
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Granted: 1959-12-15
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Expires: 1978-10-10
Abstract
No abstract record available.
Inventors
- 👤 Bernard J Thiegs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:30
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
METHOD WHICH COMPRISES CONFINING A VOLATILE SOIL TREATING SUBSTANCE THAT IS RELEASED IN SOIL BEING TREATED THEREWITH UNDER AND BY MEANS OF A BLANKET OF A STABLE, LONG-LASTING FOAM COVERING THE SURFACE OF THE SOIL, WHICH FOAM BLANKET HAS AN AVERAGE LAYER THICKNESS OF AT LEAST ABOUT ONE-QUARTER INCH AND A LONGEVITY OF AT LEAST ABOUT ONE HOUR AND WHICH HAS BEEN GENERATED FROM AN AQUEOUS, SPUMESCENT, FOAM-PROVIDING COMPOSITION.
Claim 2
Dependent Claim
69 words
METHOD WHICH COMPRISES CONFINING A VOLATILE SOIL TREATING SUBSTANCE THAT IS RELEASED IN SOIL BEING TREATED THEREWITH UNDER AND BY MEANS OF A BLANKET OF A STABLE, LONG-LASTING FOAM COVERING THE SURFACE OF THE SOIL, WHICH FOAM BLANKET HAS AN AVERAGE LAYER THICKNESS OF AT LEAST ABOUT ONE-QUARTER INCH AND A LONGEVITY OF AT LEAST ABOUT ONE HOUR AND WHICH HAS BEEN GENERATED FROM AN AQUEOUS, SPUMESCENT, FOAM-PROVIDING COMPOSITION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |