US3574029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing multi-layer transferable castings
Assignee: Spears Inc
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Filing: 1968-04-04
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Granted: 1971-04-06
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Expires: 1988-04-04
Abstract
Abstract A PROCESS FOR MAKING A MULTIPLE-LAYER TRANSFERABLE UNFIRED CASTING SUPPORTED ON A TEMPORARY SUBSTRATE. THE LAYERS ARE SEPARATELY CAST ON TEMPORARY SUBSTRATES AND ARE THEN BROUGHT TOGETHER AND BONDED, AFTER WHICH ONE OF THE TEMPORARY SUBSTRATES IS STRIPPED AWAY. THE RESULTING MULTIPLE-LAYER CASTING CAN BE TRANSFERRED TO A PERMANENT SUBSTRATE AND FIRED.
Inventors
- 👤 Kitty S Ettre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:23
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/4505; C04B41/4511; C04B41/80; C04B41/81; Y; Y10; Y10T; Y10T156/00; Y10T156/11; Y10T156/1168
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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |