US2711974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating for metals
Assignee: HERMAN A SPERLICH
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Filing: 1951-12-08
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Granted: 1955-06-28
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Expires: 1971-12-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Happe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:55
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; C04B2111/00; C04B2111/00474; C04B2111/00482
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
60 words
THE PROCESS OF COATING METALS WHICH CONSIST IN APPLYING THERETO A THIN LAYER F AN INTIMATE MIXTURE OF 1.290 SP.GR. WATER SOLUTION OF SDIUM SILICATE HAVING A HIGH SODIUM CONTENT----------------50% BY WEIGHT COBALT OXIDE---------------------- 15% BY WEIGHT NICKEL OXIDE---------------------- 15% BY WEIGHT EXFOLIATED VERMICULITE-------------10% BY WEIGHT KAOLIN ----------------------------10% BY WEIGHT AND HEATINAG TO A TEMPERATURE OF AT LEAST 750-800* F.
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) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |