US4257191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture reservoir for fertile soils for plants
Assignee: Industrie-Wert Beteiligungsgesellschaft MbH
•
Filing: 1979-06-19
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Granted: 1981-03-24
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Expires: 1999-06-19
Abstract
Abstract A granular or plate-like calcium aluminum silicate layer stores water beneath fertile soil. The silicate material may be coated with fertilizer or chemicals and may be shipped and installed within a wrapping, at least one surface of which is moisture pervious. A fleece-like material may form the pervious surface. A silicate container with a perforated cover and sidewalls fits within a planter. A filler pipe extends through the soil into the container. The silicate material may be mixed with the fertile soil.
Inventors
- 👤 Heinz Holter
- 👤 Heinz Gresch
- 👤 Heinrich Igelbuscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:30
CPC Classifications
A; A01; A01G; A01G7/00; A01G24/00; A01G24/10; A01G24/12; A01G24/13; A01G24/40; A01G24/42; A01G24/44
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
61 words
A moisture reservoir for plants comprised of a soil and water impermeable first layer, a second layer of expanded aluminum silicate on said first layer, and means in said second layer for applying moisture thereto, a third layer of a mixture of soil and expanded aluminum silicate on said second layer, and a fourth layer of soil on said third layer.
Claim 2
Dependent Claim
61 words
A moisture reservoir for plants comprised of a soil and water impermeable first layer, a second layer of expanded aluminum silicate on said first layer, and means in said second layer for applying moisture thereto, a third layer of a mixture of soil and expanded aluminum silicate on said second layer, and a fourth layer of soil on said third layer.
Claim 3
Dependent Claim
61 words
A moisture reservoir for plants comprised of a mass of aluminum silicate surrounded on its sides and bottom by a water and soil impervious material, fibrous wicking material across the top of said mass, a soil layer on said wicking material, and a filling pipe beginning at a point above said soil layer, extending therethrough, and terminating adjacent said wicking material.
Claim 4
Dependent Claim
61 words
A moisture reservoir for plants comprised of a mass of aluminum silicate surrounded on its sides and bottom by a water and soil impervious material, fibrous wicking material across the top of said mass, a soil layer on said wicking material, and a filling pipe beginning at a point above said soil layer, extending therethrough, and terminating adjacent said wicking material.
Claim 5
Dependent Claim
17 words
A moisture reservoir as in claims 1 or 2, wherein said aluminum silicate is calcium aluminum silicate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |