US2762731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and materials for producing paint bonding films on ferriferous metal surfaces
Assignee: Henkel Corp
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Filing: 1952-03-29
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Granted: 1956-09-11
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Expires: 1972-03-29
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand P Heller
- 👤 Jr Frank Palin Spruance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:49
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/34; C23C22/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE METHOD OF PRODUCING A PAINT-BONDING SURFACE ON FERRIFEROUS METAL SURFACES WHICH COMPRISES TREATING THE CLEAN SURFACE WITH A SOLUTION CONTAINING AS ITS ESSENTIAL COATING PRODUCING INGREDIENTS CHLORIDE, COMPLEX FLUORIDE AND CHROMATE RADICALS, THE COMPLEX FLUORIDE BEING FROM THE CLASS CONSISTING OF FLUOSILICATE, FLUOZIRCONATE, FLUOBORATE, FLUOTITANATE AND FLUOSTANNATE (CALCULATED AS AMMONIUM FLUOSILICATE ON A FLUORINE BASIS), THE PH OF THE SOLUTION LYING BETWEEN 0.8, AND 5.5 AND THE SAID INGREDIENTS BEING PRESENT IN APPROXIMATELY THE FOLLOWING AMOUNTS:
Claim 2
Independent Claim
77 words
THE METHOD OF PRODUCING A PAINT-BONDING SURFACE ON FERRIFEROUS METAL SURFACES WHICH COMPRISES TREATING THE CLEAN SURFACE WITH A SOLUTION CONTAINING AS ITS ESSENTIAL COATING PRODUCING INGREDIENTS CHLORIDE, COMPLEX FLUORIDE AND CHROMATE RADICALS, THE COMPLEX FLUORIDE BEING FROM THE CLASS CONSISTING OF FLUOSILICATE, FLUOZIRCONATE, FLUOBORATE, FLUOTITANATE AND FLUOSTANNATE (CALCULATED AS AMMONIUM FLUOSILICATE ON A FLUORINE BASIS), THE PH OF THE SOLUTION LYING BETWEEN 0.8, AND 5.5 AND THE SAID INGREDIENTS BEING PRESENT IN APPROXIMATELY THE FOLLOWING AMOUNTS:
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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) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |