US4590228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection composition for filling or reinforcing grounds
Assignee: Clariant Finance BVI Ltd
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Filing: 1985-02-15
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Granted: 1986-05-20
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Expires: 2005-02-15
Abstract
Abstract The invention relates to a composition of matter especially adapted to injection into the ground, comprising an alkali metal silicate and at least one water-soluble aminoplastic resin, wherein the aldehyde is selected from the group comprising formaldehyde, glyoxal and a mixture of glyoxal and formaldehyde, and the nitrogenous compound is urea.
Inventors
- 👤 Michel Soreau
- 👤 Daniel Siegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:51
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/40; C09K17/42; C09K17/46
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
47 words
A composition for treating subsurface formations consisting essentially of an alkali metal silicate present as an aqueous solution and at least one water-soluble aminoplastic resin, wherein the aminoplastic resin is made from an aldehyde selected from the group consisting of formaldehyde, glyoxal, and mixtures thereof, and urea.
Claim 2
Dependent Claim
47 words
A composition for treating subsurface formations consisting essentially of an alkali metal silicate present as an aqueous solution and at least one water-soluble aminoplastic resin, wherein the aminoplastic resin is made from an aldehyde selected from the group consisting of formaldehyde, glyoxal, and mixtures thereof, and urea.
Claim 3
Dependent Claim
15 words
The composition of claim 1 wherein the aldehyde is a mixture of glyoxal and formaldehyde.
References Cited (Backward Citations)
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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) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |