Patent US2580025A successfully refreshed from Google Patents.
US2580025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifouling pipe line enamel
Assignee: Standard Oil Development Co
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Filing: 1948-09-04
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Granted: 1951-12-25
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Expires: 1968-09-04
Abstract
No abstract record available.
Inventors
- 👤 Holmes August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:56
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1606; C09D5/1612; C09D5/1618
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
AN IMPROVED COATING MATERIAL SUITABLE FOR EMPOLYMENT IN TROPICAL WATERS WHICH COMPRISES FROM 0.5 TO 5% OF ANTIMONY OXIDE AND FROM ABOUT 40 TO 70% OF A BITUMINOUS MATERIAL HAVING A SOFTENING POINT IN THE RANGE FROM 200 TO 250* F. AND A FILLER.
Claim 2
Dependent Claim
44 words
AN IMPROVED COATING MATERIAL SUITABLE FOR EMPOLYMENT IN TROPICAL WATERS WHICH COMPRISES FROM 0.5 TO 5% OF ANTIMONY OXIDE AND FROM ABOUT 40 TO 70% OF A BITUMINOUS MATERIAL HAVING A SOFTENING POINT IN THE RANGE FROM 200 TO 250* F. AND A FILLER.
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) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |