US2847374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal processing
Assignee: Kolene Corp
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Filing: 1956-06-12
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Granted: 1958-08-12
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Expires: 1976-06-12
Abstract
No abstract record available.
Inventors
- 👤 Hugh G Webster
- 👤 Robert H Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:23
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/34; C21D1/44; C21D1/46; C25; C25F; C25F1/00; C25F1/02; C25F1/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
50 words
A STRESS-RELIEVING BATH COMPOSITON IN WHICH THE METAL PARTS ARE HEATED FOR STRESS-RELEIVING, COMPRISING BY WEIGHT, ABOUT 75 TO 90% SODIUM HYDROXIDE, 7 TO 13% SODIUM CHLORIDE, UP TO ABOUT 6% SODIUM FLUORIDE, 0.5 TO 5% SODIUM ALUMINATE AND 1 TO 1K% OF HYDRATED HYDROXIDE OF AN ALKALI EARTH METAL.
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) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |