Patent US5081791A successfully refreshed from Google Patents.
US5081791A
Expired / Lapsed
US
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Support for out-of-ground cultivation comprising superabsorbent particles and method of production
Assignee: Eridania Beghin Say SA
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Filing: 1987-07-29
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Granted: 1992-01-21
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Expires: 2007-07-29
Abstract
Abstract The invention relates to the field of out-of-ground cultivation, and more precisely to a cultivation support comprising superabsorbant particles. According to a preferred embodiment, the support is comprised of an envelope (2) consisting of two sheets (3, 4) of polyethylene welded at their edges. The envelope comprises a layer of superabsorbant particles (8) provided between two sheets of cellulose wadding (9). When using the support, openings are made at regular intervals and cultivation plant-containing lumps of earth are inserted therein, and watering is carried out with nutrient solutions. Application for out-of-ground cultivation.
Inventors
- 👤 Gerard Baron
- 👤 Jacques Vuillemin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:36
CPC Classifications
A; A01; A01G; A01G24/00; A01G24/50; A01G24/20; A01G24/22; A01G24/30; A01G24/35; A01G24/40; A01G24/48
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
60 words
A cultivation support for use in the field of out-of-ground cultivation comprising an envelope made of a waterproof material and a layer of superabsorbent particles contained in said envelope, said superabsorbent particles being uniformly distributed on and fixed to a support wherein said support is a holding sheet separate from said envelope or the internal lower surface of said envelope.
Claim 2
Dependent Claim
60 words
A cultivation support for use in the field of out-of-ground cultivation comprising an envelope made of a waterproof material and a layer of superabsorbent particles contained in said envelope, said superabsorbent particles being uniformly distributed on and fixed to a support wherein said support is a holding sheet separate from said envelope or the internal lower surface of said envelope.
Claim 3
Dependent Claim
20 words
The cultivation support of claim 1 which includes a water-permeable sheet material on the upper surface of said superabsorbent particles.
Claim 4
Dependent Claim
17 words
The cultivation support of claim 1 or 2 wherein the separate holding sheet is a foam material.
Claim 5
Dependent Claim
19 words
The cultivation support of claim 1 or 2 wherein the separate holding sheet is a natural or fibrous structure.
Claim 6
Dependent Claim
13 words
The cultivation support of claim 4 wherein the holding sheet is cellulose wadding.
Claim 7
Dependent Claim
28 words
The cultivation support of claim 1 or 2 wherein the superabsorbent particles are fixed to the supporting sheet by a bond obtained by wetting of the super-absorbent particles.
Claim 8
Dependent Claim
42 words
The cultivation support of claim 1 or 2 wherein the superabsorbent particles take the form of grains of diameters of between 0.5 and 4 mm, or fibers of from 0.01 to 0.2 mm in diameter and 5 to 20 mm in length.
Claim 9
Dependent Claim
15 words
The cultivation support of claim 1 or 2 wherein the superabsorbent particles are polyacrylamide based.
Claim 10
Dependent Claim
24 words
The cultivation support of claim 1 or 2 wherein the superabsorbent particles are distributed in quantities of 100 g to 800 g per sq.m.
Claim 11
Dependent Claim
28 words
The cultivation support of claim 1 or 2 wherein the superabsorbent particles are presented as a mixture with a filler material which will distribute water by capillary action.
Claim 12
Dependent Claim
47 words
The cultivation support of claim 1 or 2 having one or more openings in one of the surfaces of the envelope in which one or more cultivation clods containing a plant can be inserted and the necessary water for the growth of the plant can be added.
Claim 13
Dependent Claim
26 words
The cultivation support of claim 9 wherein the superabsorbent particles are presented as a mixture with a filler material which will distribute water by capillary action.
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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) | 1995-01-20 | 1995-07-22 | 1996-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-20 | 1999-07-22 | 2000-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-20 | 2003-07-22 | 2004-01-21 | $7700.00 | Window Closed / Lapsed |