US3178322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal preheat-treat coating
Assignee: North American Aviation Corp
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Filing: 1961-03-30
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Granted: 1965-04-13
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Expires: 1981-03-30
Abstract
No abstract record available.
Inventors
- 👤 Edward B Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:17
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/008; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/07; C03C3/072; C03C3/076; C03C3/102; C03C3/108; C03C8/00; C03C8/02; C03C8/10; C21; C21D; C21D1/00; C21D1/68; C21D1/70; C23; C23C; C23C8/00; C23C8/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
A PROCESS FOR HEAT TREATING A STAINLESS STEEL ARTICLE, THE PROCESS THE COMPRISING APPLYING A COATING COMPOSITION TO THE SURFACES OF SAID ARTICEL; HEATIG THE COATED ARTICLE TO FUSE THE COATING; THEREAFTER HEAT TREATING THE COATED ARTICLE TO A PREDETERMINED TEMPERATURE, AND SUBSEQUENTLY COOLING THE COATED ARTICLE TO ROOM TEMPERATURE THEREBY CAUSING THE COATING COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 12 PERCENT KAOLIN; 24 PERCENT OF A LEAD BOROSILICATE FRIT CONTAINING 63-65 PERCENT LEAD OXIDE, 10-15 PERCENT SILICON DIOXIDE AND 20-25 PERCENT BORIC ANHYDRIDE; 2.5 PERCENT CALCIUM CHLORIDE; 1.5 PERCENT ACRYLOID RESIN; AND 60 PERCENT TOLUENE.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |