Patent US3605669A successfully refreshed from Google Patents.
US3605669A
Expired / Lapsed
US
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Floating self-elevating platform
Assignee: Kerr McGee Corp
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Filing: 1969-12-01
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Granted: 1971-09-20
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Expires: 1989-12-01
Abstract
Abstract A FLOATING VESSEL FOR MARINE OPERATIONS SUCH AS WELL DRILLING IN DEEP OFFSHORE WATERS. BUOYANCY AND STABILITY IN THE OPERATION POSITION ARE PROVIDED BY A PLURALITY OF ELONGATED COLUMNS LOCATED IN A STABILIZING PATTERN ABOUT THE VESSEL, AND A BARGE OR SHIP SUPPORING A WORKING PLATFORM VERTICALLY MOVABLE RELATIVE TO THE COLUMNS IS PROVIDED. THE BARGE SUPPORTING THE WORKING PLATFORM PROVIDES ADDITIONAL BUOYANCY AND STABILITY DURING RELOCATION OF THE VESSEL.
Inventors
- 👤 Tsi V Yu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:58
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/44; B63B35/4413; B63B1/00; B63B1/02; B63B1/10; B63B1/107; B63B1/14; B63B2001/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |