US3337987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil treatment process
Assignee: International Synthetic Rubber Co Ltd
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Filing: 1966-04-26
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Granted: 1967-08-29
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Expires: 1986-04-26
Abstract
No abstract record available.
Inventors
- 👤 Bennett Donald Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:15
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005; C09; C09K; C09K17/00; C09K17/14; C09K17/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR STABILIZING SOIL AGAINST EROSION COMPRISING FORMING AT THE SURFACE THEREOF A PROTECTIVE FILM OF A MIXTURE OF BITUMEN AND A RUBBER, SAID FILM HAVING A THICKNESS SUFFICIENT TO SUSTAIN PLANT LIFE IN THE UNDERLYING SOIL, AND THE WEIGHT RATIO OF BITUMEN TO RUBBER IN SAID FILM BEING BETWEEN ABOUT 1:1 AND 20:1, RESPECTIVELY.
Claim 2
Dependent Claim
56 words
A PROCESS FOR STABILIZING SOIL AGAINST EROSION COMPRISING FORMING AT THE SURFACE THEREOF A PROTECTIVE FILM OF A MIXTURE OF BITUMEN AND A RUBBER, SAID FILM HAVING A THICKNESS SUFFICIENT TO SUSTAIN PLANT LIFE IN THE UNDERLYING SOIL, AND THE WEIGHT RATIO OF BITUMEN TO RUBBER IN SAID FILM BEING BETWEEN ABOUT 1:1 AND 20:1, RESPECTIVELY.
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |