US3356777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for sealing leaks in buried conduits
Assignee: Phillips Petroleum Co
•
Filing: 1964-08-10
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Granted: 1967-12-05
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Expires: 1984-08-10
Abstract
No abstract record available.
Inventors
- 👤 Herbert M Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:30
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/16; F16L55/162; F16L55/1645
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF SEALING LEAKS IN A BURIED CONDUIT WHICH COMPRISES PASSING AN AQUEOUS SLURRY OF DIATOMITE CONTAINING A DISPERSING AGENT FOR SAID DIATOMITE, THROUGH SAID CONDUIT UNDER SUFFICIENT PRESSURE TO FORCE A PORTION OF SAID SLURRY OUT OF SAID CONDUIT AT SAID LEAKS SO AS TO FORM A FLUID PERMEABLE MAT AT THE LOCUS OF THE LEAK; AND THEN PASSING AN AQUEOUS EMULSION OF A BITUMEN THROUGH SAID CONDUIT UNDER SUFFICIENT PRESSURE TO FORCE A PORTION OF SAID EMULSION INTO CONTACT WITH THE DIATOMITE AT SAID LEAKS WHEREBY THE BITUMEN OF SAID EMULSION SEALS SAID LEAKS.
Claim 2
Independent Claim
97 words
THE METHOD OF SEALING LEAKS IN A BURIED CONDUIT WHICH COMPRISES PASSING AN AQUEOUS SLURRY OF DIATOMITE CONTAINING A DISPERSING AGENT FOR SAID DIATOMITE, THROUGH SAID CONDUIT UNDER SUFFICIENT PRESSURE TO FORCE A PORTION OF SAID SLURRY OUT OF SAID CONDUIT AT SAID LEAKS SO AS TO FORM A FLUID PERMEABLE MAT AT THE LOCUS OF THE LEAK; AND THEN PASSING AN AQUEOUS EMULSION OF A BITUMEN THROUGH SAID CONDUIT UNDER SUFFICIENT PRESSURE TO FORCE A PORTION OF SAID EMULSION INTO CONTACT WITH THE DIATOMITE AT SAID LEAKS WHEREBY THE BITUMEN OF SAID EMULSION SEALS SAID LEAKS.
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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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |