US4166709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for vaulting hazardous chemical waste materials
Assignee: STABATROL CORP
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Filing: 1978-08-03
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Granted: 1979-09-04
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Expires: 1998-08-03
Abstract
Abstract Hazardous chemical waste materials can be vaulted for permanent disposal by encapsulation in a water-impermeable film and a soil cement.
Inventors
- 👤 Richard E. Valiga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:47
CPC Classifications
E; E02; E02D; E02D31/00; E02D31/002; E02D31/004; B; B09; B09B; B09B1/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
71 words
A method for vaulting hazardous chemical waste materials which comprises: (1) selecting a vault area; (2) applying a first soil cement layer over the said vault area; (3) applying a second soil cement layer over the said first soil cement layer; (4) applying a first water-impermeable film to the top of the said second soil cement layer; (5) depositing the said hazardous chemical waste materials on the said first water-impermeable film;
Claim 2
Independent Claim
71 words
A method for vaulting hazardous chemical waste materials which comprises: (1) selecting a vault area; (2) applying a first soil cement layer over the said vault area; (3) applying a second soil cement layer over the said first soil cement layer; (4) applying a first water-impermeable film to the top of the said second soil cement layer; (5) depositing the said hazardous chemical waste materials on the said first water-impermeable film;
Claim 3
Dependent Claim
78 words
(6) applying a second water-impermeable film over the compacted hazardous chemical waste materials; (7) sealing the edges of the said first and second films; (8) applying a third soil cement layer over the said second film; (9) sealing the perimeter of said third layer to the perimeter of said second layer; (10) covering the said third soil cement layer with filler materials and grading the said filler materials to conform to the terrain surrounding the said vault area.
Claim 4
Dependent Claim
78 words
(6) applying a second water-impermeable film over the compacted hazardous chemical waste materials; (7) sealing the edges of the said first and second films; (8) applying a third soil cement layer over the said second film; (9) sealing the perimeter of said third layer to the perimeter of said second layer; (10) covering the said third soil cement layer with filler materials and grading the said filler materials to conform to the terrain surrounding the said vault area.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein the said water-impermeable film is polyethylene film.
Claim 6
Dependent Claim
24 words
The method of claim 1 wherein the said first and second soil cement layers together have a total thickness of 9 to 15 inches.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-03 | 1983-03-05 | 1983-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-03 | 1987-03-05 | 1987-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-03 | 1991-03-05 | 1991-09-04 | $7700.00 | Window Closed / Lapsed |