US2935412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for protecting metallic structures
Assignee: Atlantic Richfield Co
•
Filing: 1954-12-21
•
Granted: 1960-05-03
•
Expires: 1974-12-21
Abstract
No abstract record available.
Inventors
- 👤 Felix C Gzemski
- 👤 Ford K Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:20
CPC Classifications
C; C09; C09D; C09D195/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A COMPOSITION FOR THE INSULATION AND PROTECTION OF METALLIC STRUCTURES COMPRISING A FIRST GRANDULAR PETROELUM ASPHALT AND A GRANULAR EXPANDED PERLITE COATED WITH A SECOND PETROLEUM ASPHALT, THE VOLUME RATIO OF TOTAL ASPHALTS TO PERLITE BEING APPROXIMATELY 1:1, SAID FIRST AND SAID SECOND PETROLEUM ASPHALTS BEING CHARACTERIZED BY HAVING ASTM SOFTENING POINTS IN THE RANGE OF 150*F. TO 500*F. AND SEPARATED FROM ONE ANOTHER BY AT LEAST 25*F. AND THE VOLUME RATIO OF THE HIGHER SOFTENING POINT ASPHALT TO THE LOWER SOFTENING POINT ASPHALT RANGING BETWEEN 10:1 AND 1:1, SAID COMPOSITION BEING FURTHER CHARACHERTIZED BY FORMING A PLASTIC ZONE IMMEDIATELY ADJACENT THE OUTER SURFACE OF SAID STRUCTURES, A SINTERED ZONE SURROUNDING SAID PLASTIC ZONE AND A ZONE OF LOOSE GRANULES SURROUNDING SAID SINTERED ZONE WHEN SAID COMPOSITION IS HEATED TO A TEMPERATURE SUFFICEINTLY HIGH TO MELT A PORTION OF THE ASPHALT.
Claim 2
Dependent Claim
141 words
A COMPOSITION FOR THE INSULATION AND PROTECTION OF METALLIC STRUCTURES COMPRISING A FIRST GRANDULAR PETROELUM ASPHALT AND A GRANULAR EXPANDED PERLITE COATED WITH A SECOND PETROLEUM ASPHALT, THE VOLUME RATIO OF TOTAL ASPHALTS TO PERLITE BEING APPROXIMATELY 1:1, SAID FIRST AND SAID SECOND PETROLEUM ASPHALTS BEING CHARACTERIZED BY HAVING ASTM SOFTENING POINTS IN THE RANGE OF 150*F. TO 500*F. AND SEPARATED FROM ONE ANOTHER BY AT LEAST 25*F. AND THE VOLUME RATIO OF THE HIGHER SOFTENING POINT ASPHALT TO THE LOWER SOFTENING POINT ASPHALT RANGING BETWEEN 10:1 AND 1:1, SAID COMPOSITION BEING FURTHER CHARACHERTIZED BY FORMING A PLASTIC ZONE IMMEDIATELY ADJACENT THE OUTER SURFACE OF SAID STRUCTURES, A SINTERED ZONE SURROUNDING SAID PLASTIC ZONE AND A ZONE OF LOOSE GRANULES SURROUNDING SAID SINTERED ZONE WHEN SAID COMPOSITION IS HEATED TO A TEMPERATURE SUFFICEINTLY HIGH TO MELT A PORTION OF THE ASPHALT.
References Cited (Backward Citations)
US1662377A
Cited
US1603961A
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US1736915A
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US1778461A
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US2332219A
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US2446903A
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US2634208A
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US2625512A
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US2668125A
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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) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |