US2861892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rust preventive composition
Assignee: ConocoPhillips Co
•
Filing: 1954-10-27
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Granted: 1958-11-25
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Expires: 1974-10-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Radd
- 👤 D Arey A Shock
- 👤 John D Sudbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:37
CPC Classifications
C; C09; C09D; C09D195/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A COATING COMPOSITION ADAPTED FOR USE AS A CORROSION INHIBITOR COMPRISING A BITUMASTIC PRIMER (COLD DIP) CONSISTING OF PETROLEUM TAR, ROSIN, GILSONITE, AND SOLVENT NAPHTHA IN THE APPROXIMATE RATIO OF 28, 1, 9, AND 62 PERCENT, RESPECTIVELY, AND FROM 0.002 TO 0.1 PART OF A SULFONATE PER 100 PARTS OF SAID PRIMER WHEREIN THE CATION OF SAID SULFONATE IS ORGANIC.
Claim 2
Dependent Claim
60 words
A COATING COMPOSITION ADAPTED FOR USE AS A CORROSION INHIBITOR COMPRISING A BITUMASTIC PRIMER (COLD DIP) CONSISTING OF PETROLEUM TAR, ROSIN, GILSONITE, AND SOLVENT NAPHTHA IN THE APPROXIMATE RATIO OF 28, 1, 9, AND 62 PERCENT, RESPECTIVELY, AND FROM 0.002 TO 0.1 PART OF A SULFONATE PER 100 PARTS OF SAID PRIMER WHEREIN THE CATION OF SAID SULFONATE IS ORGANIC.
References Cited (Backward Citations)
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Cited
US2182992A
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US2545137A
Cited
US2615815A
Cited
US2509786A
Cited
US2669525A
Cited
US2629676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |