Patent US3643741A successfully refreshed from Google Patents.
US3643741A
Expired / Lapsed
US
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Sealing of underwater fissures
Assignee: SALVATORE W MIRANDA
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Filing: 1970-02-03
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Granted: 1972-02-22
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Expires: 1990-02-03
Abstract
Abstract Oil flow from an open fissure on the ocean bottom is controlled by polymerizing in place in the fissure a resin composition which binds the oil or by placing a dome over the fissure to capture the oil. The dome may be tapped and the oil collecting in the dome recovered.
Inventors
- 👤 Salvatore W Miranda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:52
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B43/00; E21B43/01; E21B43/0122
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
67 words
A method of sealing oil leaking fissures on the bottom of the ocean floor comprising the steps of: drilling a slant channel into the fissure at a location below the ocean floor, applying to the fissure an oleophilic resin-forming liquid composition at said location; and curing the liquid in place in the fissure to form a solid, oil impermeable seal adherent to the walls of the fissure.
Claim 2
Dependent Claim
38 words
A method according to claim 2 in which the fissure lies adjacent a ruptured well casing, the slant channel is drilled into the casing below the rupture and the liquid is fed through the channel into the casing.
Claim 3
Independent Claim
64 words
A method of sealing oil leaking fissures on the bottom of the ocean floor comprising the steps of: applying to the fissure a reactive liquid composition comprising mixture of a polyol, a polyol reactive resin and a mixture of nonionic surfactants, and curing the liquid in place in the fissure to form a solid, oil impermeable seal adherent to the walls of the fissure.
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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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |