Patent US2021619A successfully refreshed from Google Patents.
US3129684A
Expired / Lapsed
US
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Insulated ship hull
Assignee: Freeport Minerals Co
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Filing: 1962-02-06
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Granted: 1964-04-21
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Expires: 1982-02-06
Abstract
No abstract record available.
Inventors
- 👤 Clifford M Cockrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:46
CPC Classifications
B; B63; B63B; B63B25/00; B63B25/02; B63B25/08; Y; Y10; Y10S; Y10S220/00; Y10S220/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A SHIP FOR TRANSPORTING HOT, LIQUID SULPHUR, COMPRISING A HULL, A TANK IN SAID HULL FOR RECEIVING HOT, LIQUID SULFUR, SAID TANK HAVING ON ITS INNER VERTICAL AND BOTTOM SURFACES FOR ENGAGEMENT WITH SAID SULPHUR A LINING OF ABUTTING WOOD PLANKS, AND A COVER OF SHEET METAL OVER SAID PLANKS ON SAID INNER VERTICAL SURFACES, SAID LINING ON SAID BOTTOM SURFACE INCLUDING WOODEN SLEEPERS EXTENDING AT SPACED INTERVALS ALONG SAID BOTTOM SURFACE, SAID ABUTTING WOOD PLANKS ON SAID BOTTOM SURFACE EXTENDING IN ABUTTING CONTACT IN A DIRECTION SUBSTANTIALLY TRANSVERSE TO SAID SLEEPERS, THE SPACED INTERVALS BETWEEN SAID SLEEPERS BEING SUBSTANTIALLY FILLED WITH SULPHUR
Claim 2
Dependent Claim
103 words
A SHIP FOR TRANSPORTING HOT, LIQUID SULPHUR, COMPRISING A HULL, A TANK IN SAID HULL FOR RECEIVING HOT, LIQUID SULFUR, SAID TANK HAVING ON ITS INNER VERTICAL AND BOTTOM SURFACES FOR ENGAGEMENT WITH SAID SULPHUR A LINING OF ABUTTING WOOD PLANKS, AND A COVER OF SHEET METAL OVER SAID PLANKS ON SAID INNER VERTICAL SURFACES, SAID LINING ON SAID BOTTOM SURFACE INCLUDING WOODEN SLEEPERS EXTENDING AT SPACED INTERVALS ALONG SAID BOTTOM SURFACE, SAID ABUTTING WOOD PLANKS ON SAID BOTTOM SURFACE EXTENDING IN ABUTTING CONTACT IN A DIRECTION SUBSTANTIALLY TRANSVERSE TO SAID SLEEPERS, THE SPACED INTERVALS BETWEEN SAID SLEEPERS BEING SUBSTANTIALLY FILLED WITH SULPHUR
References Cited (Backward Citations)
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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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |