US3582368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-inhibiting composition
Assignee: Hexion Inc
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Filing: 1968-12-30
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Granted: 1971-06-01
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Expires: 1988-12-30
Abstract
Abstract THIS INVENTION RELATES TO A CORROSION-INHIBITING COMPOSITION COMPRISING CASEIN, AN EPOXIDIZED OIL AND A HEXAVALENT CHROMIUM COMPOUND, THE PROPORTIONS BY WEIGHT BEING, FOR EACH PART BY WEIGHT CASEIN, FROM ABOUT .1 TO ABOUT .5 PART BY WEIGHT OF EPOXIDIZED OIL AND FROM ABOUT .005 TO ABOUT .3 PART BY WEIGHT HEXAVALENT CHROMIUM COMPOUND (CALCULATED AS AMMONIUM DICHROMATE). THE INVENTION ALSO COMPRISES THE METHOD OF INHIBITING THE CORROSION OF SURFACES OF ARTICLES COMPOSED OF IRON AND STEEL BY APPLICATION THEREOVER OF THE CORROSION-INHIBITING COMPOSITION AND DRYING THEREOF AT ROOM TEMPERATURE.
Inventors
- 👤 Harold Karl Salzberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:10
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/08; C09D189/00; C09D189/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |