Patent US3503218A successfully refreshed from Google Patents.
US3503218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Riser installation method
Assignee: Brown and Root Inc
•
Filing: 1966-02-17
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Granted: 1970-03-31
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Expires: 1986-02-17
Abstract
No abstract record available.
Inventors
- 👤 Edgar R Broadway
- 👤 Robert B Mcleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:15
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/01; E21B43/0107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A METHOD OF PLACING A TUBULAR STRUCTURE ON AN OFFSHORE STRUCTURE IN A BODY OF WATER COMPRISING: SUPPORTING A SUBSTANTIALLY HORIZONTAL SECTION OF THE TUBULAR STRUCTURE IN SAID BODY OF WATER AS A SUBSTANTIALLY VERTICAL SECTION COUPLED TO SAID HORIZONTAL SECTION IS DISPOSED ON SAID OFFSHORE STRUCTURE; AND ADDING LENGTHS OF TUBULAR STRUCTURE TO SAID VERTICAL SECTION AS SAID VERTICAL SECTION IS LOWERED ON SAID OFF-
Claim 2
Independent Claim
66 words
A METHOD OF PLACING A TUBULAR STRUCTURE ON AN OFFSHORE STRUCTURE IN A BODY OF WATER COMPRISING: SUPPORTING A SUBSTANTIALLY HORIZONTAL SECTION OF THE TUBULAR STRUCTURE IN SAID BODY OF WATER AS A SUBSTANTIALLY VERTICAL SECTION COUPLED TO SAID HORIZONTAL SECTION IS DISPOSED ON SAID OFFSHORE STRUCTURE; AND ADDING LENGTHS OF TUBULAR STRUCTURE TO SAID VERTICAL SECTION AS SAID VERTICAL SECTION IS LOWERED ON SAID OFF-
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) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |