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US3736758A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for treating non-agricultural grounds

Assignee: Scholten Honig Research N V nl
•
Filing: 1972-03-03
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Granted: 1973-06-05
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Expires: 1992-03-03
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Abstract

Abstract Non-agricultural grounds, in particular storage sites for chemical products, are rendered impermeable to liquids by incorporating and homogeneously distributing a binder in the soil down to a depth of at least about 2.5 cm, said binder being selected from the group consisting of organic and inorganic, natural and synthetic binders, and being used in a proportion ranging from about 0.75 to about 15% by weight, calculated on the soil treated and after having moistened the soil, compacting the soil thus treated in still moist condition to form a homogeneous, compact mass, and coating the surface of the thus compacted upper layer of the soil with a thin layer, to be formed in situ, of a water-insoluble polymer selected from the group consisting of polyurethanes, polyesters, polyepoxy resins and polyvinyl compounds.

Inventors

  • 👤 T Dolfing
  • 👤 J Lolkema

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 07:16
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/36; B; B65; B65D; B65D90/00; B65D90/22; C; C09; C09K; C09K17/00; C09K17/40; E02; E02D; E02D31/00; Y; Y02; Y02W; Y02W90/00; Y02W90/10

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 25 words
A process according to claim 1, wherein the binder is incorporated in the soil to a depth ranging from about 5 to about 15 cm.
Claim 2
Dependent Claim 27 words
A process according to claim 1, wherein the binder is used in a proportion of about 0.75 to about 5% by weight, calculated on the soil treated.
Claim 3
Dependent Claim 24 words
A process according to claim 1, wherein the binder is selected from the group consisting of water-soluble and water-dispersible, natural and synthetic, high-polymeric materials.
Claim 4
Dependent Claim 19 words
A process according to claim 1, wherein the binder is used in the form of a dilute aqueous mixture.
Claim 5
Dependent Claim 18 words
A process according to claim 1, wherein the soil is moistened with water before the binder is applied.
Claim 6
Dependent Claim 18 words
A process according to claim 1, wherein the soil is moistened with water as the binder is applied.
Claim 7
Dependent Claim 19 words
A process according to claim 1, wherein the soil is moistened with water after the binder has been applied.
Claim 8
Dependent Claim 35 words
A process according to claim 1, wherein the water-insoluble polymer is a non-cellular polyurethane, and the polyurethane forming mixture is applied to the surface of the soil when said surface is in substantially dry condition.
Claim 9
Dependent Claim 27 words
A process according to claim 1, wherein the layer of water-insoluble polymer is applied in a thickness ranging from some tenths of a millimeter to some centimeters.
Claim 10
Dependent Claim 26 words
A process according to claim 1, wherein the layer of water-insoluble polymer is applied in a thickness ranging from about 0.5 to about 5 mm thick.
Claim 11
Dependent Claim 33 words
A process according to claim 1, wherein said non-agricultural ground is a storage site for chemicals, an embankment, a roadside, a slope, a bank, a quay, a temporary road, or a building site.
Claim 12
Dependent Claim 32 words
A process according to claim 1, wherein said non-agricultural ground is the compound and the protective embankment of a storage depot for inflammable liquids, such as that of a large oil tank.

References Cited (Backward Citations)

GB1053870A Cited
US2651619A Cited
US3077054A Cited
GB885762A Cited
US3131074A Cited
US3371712A Cited
US3367892A Cited
US3416604A Cited
US3482634A Cited
US3643444A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-06-04 1976-12-04 1977-06-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-06-04 1980-12-04 1981-06-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-06-04 1984-12-04 1985-06-05 $7700.00 Window Closed / Lapsed

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