US3690107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of impeding the growth of plants on non-agricultural soils
Assignee: Lolkema Scholten Honig Research
•
Filing: 1970-09-09
•
Granted: 1972-09-12
•
Expires: 1990-09-09
Abstract
Abstract Method of impeding the growth of plants on non-agricultural soils substantially completely by incorporating into said soils and homogeneously distributing therethrough, to a depth of at least one inch, a water-soluble or water-dispersible, preferably water-insoluble, natural or synthetic high polymeric substance in an amount of between 0.03 and 0.75 weight percent of the treated soil, wetting down the soil thoroughly with water and thereafter compacting the thus treated soil while still being in a wet state to a homogeneous, coherent and dense mass.
Inventors
- 👤 Thale Dolfing
- 👤 Jan Lolkema
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:44
CPC Classifications
E; E02; E02D; E02D17/00; E02D17/20
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
89 words
A method according to claim 1 comprising: a. loosening and crumbling the soil to a depth of at least 1 inch. b. homogeneously dispensing a water-insoluble synthetic or derivatized natural high polymeric substance capable of forming aqueous dispersions through the loosened and crumbled layer of the soil, c. wetting down the crumbled soil thoroughly with water, either before, during or after the incorporation of the high polymeric substance and d. compacting the treated layer of soil while still in a wet state to a homogeneous, coherent and dense mass.
Claim 2
Dependent Claim
34 words
A method according to claim 2 in which steps a), b) and c) are performed in one operation with the aid of a roto-tiller which is equipped with a spraying apparatus for aqueous liquids.
Claim 3
Dependent Claim
32 words
A method according to claim 1 in which the soil is wetted beforehand and the high polymeric substance is incorporated in the soil by addition in the form of an aqueous dispersion.
Claim 4
Dependent Claim
36 words
A method according to claim 1 in which the high polymeric substance is incorporated in the soil in the form of a dry preparation capable of dispersion in cold water followed by wetting down the soil.
Claim 5
Dependent Claim
35 words
A method according to claim 1 in which the high polymeric substance is incorporated in said soil by spraying of an aqueous dispersion of the high polymeric substance on the top layer of the soil.
Claim 6
Dependent Claim
36 words
A method according to claim 5 in which the high polymeric substance is sprayed on in the form of a diluted aqueous dIspersion, having a concentration of about 2 percent to about 5 percent by weight.
Claim 7
Dependent Claim
52 words
A method according to claim 5 in which a substantial amount of water is rained on the top layer of the soil, whereupon the high polymeric substance is sprayed on in the form of a comparatively concentrated aqueous dispersion, having a concentration of about 20 percent to about 30 percent by weight.
Claim 8
Dependent Claim
22 words
A method according to claim 1 in which the high polymeric substance is a water-insoluble polyvinyl compound capable of forming aqueous dispersions.
Claim 9
Dependent Claim
33 words
A method according to claim 9 in which the water-insoluble polyvinyl compound is a homopolymer or a copolymer of a vinyl ester of an aliphatic acid in the form of an aqueous dispersion.
Claim 10
Dependent Claim
23 words
A method according to claim 1 in which the high polymeric water-insoluble substance is used in conjunction with a water-soluble synthetic high polymer.
Claim 11
Dependent Claim
34 words
A method according to claim 11 in which the high polymeric substance consists of a mixture of a water-insoluble polyvinyl compound capable of forming aqueous dispersions and a water-soluble natural or synthetic high polymer.
Claim 12
Dependent Claim
17 words
A method according to claim 1 in which the high polymeric substance is a water-dispersible polysaccharide derivative.
Claim 13
Dependent Claim
18 words
A method according to claim 13 in which the high polymeric substance is a water-dispersible polysaccharide benzyl ether.
Claim 14
Dependent Claim
17 words
A method according to claim 13 in which the high polymeric substance is a water-dispersible starch ether.
Claim 15
Dependent Claim
18 words
A method according to claim 13 in which the high polymeric substance is a water-dispersible starch-vinyl graft copolymer.
Claim 16
Dependent Claim
35 words
A method according to claim 1 in which the surface of the top layer of the soil treated with the high polymeric substance is after compacting covered with a polyurethane, polyester, polyepoxy or polyacrylate polymer.
Claim 17
Dependent Claim
21 words
A method according to claim 1 in which the non-agricultural soil is a dike arranged around storage depots of combustible liquids.
Claim 18
Dependent Claim
26 words
A method according to claim 1 in which the high polymeric substance is homogeneously distributed through the soil to a depth of 2 to 6 inches.
References Cited (Backward Citations)
CA601558A
Cited
CA626710A
Cited
US2197843A
Cited
US2300325A
Cited
US2329148A
Cited
US3021298A
Cited
US3077054A
Cited
US3151998A
Cited
US3286475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |