US2760924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of polishing stamped steel articles
Assignee: Autoyre Co Inc
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Filing: 1952-05-22
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Granted: 1956-08-28
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Expires: 1972-05-22
Abstract
No abstract record available.
Inventors
- 👤 George D Troendly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:52
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/80; B; B24; B24B; B24B1/00; B24B31/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
62 words
THE METHOD OF TREATING ARTICLES STAMPED FROM RELATIVELY LOW CARBON STEEL WHICH CONSISTS IN CARBURIZING THE ARTICLES FOR A PERIOD SUFFICIENT TO PROVIDE A CONTINUOUS CARBURIZED LAYER THEREON HAVING A THICKNESS OF APPROXIMATELY .005" TO .006", QUENCHING THE ARTICLES TO HARDEN SAID CONTINUOUS LAYER, TEMPERING THE ARTICLES TO REDUCE THE HARDNESS OF SAID CONTINUOUS LAYER, TUMBLING THE ARTICLES TOAFTER ELECTROPLATING SAID ARTICLES.
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) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |