Patent US2848362A successfully refreshed from Google Patents.
US2848362A
Expired / Lapsed
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Method of quenching metal articles in amineral oil
Assignee: Nynas-Petroleum AB
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Filing: 1957-03-11
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Granted: 1958-08-19
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Expires: 1977-03-11
Abstract
No abstract record available.
Inventors
- 👤 Flemmert Gosta Lennart
- 👤 Lindblad Robert Hugo
- 👤 Lindhe John Harry Osvald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:46
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/56; C21D1/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD OF QUENCHING METAL ARTICLES COMPRISING HEATING SAID ARTICLES TO A TEMPERATURE AT WHICH SAID ARTICLES ARE INCANDESCENT, IMMERSING SAID HEATED ARTICLES IN A BATH OF MINERAL OIL, THE COMPONENTS OF WHICH HAVE A BOILING POINT OF AT LEAST 150*C. AND HAVE INCORPORATED THEREIN 0.2-10% OF A METALLIC SALT OF A CYCLIC CARBOXYLIC ACID.
Claim 2
Independent Claim
55 words
A METHOD OF QUENCHING METAL ARTICLES COMPRISING HEATING SAID ARTICLES TO A TEMPERATURE AT WHICH SAID ARTICLES ARE INCANDESCENT, IMMERSING SAID HEATED ARTICLES IN A BATH OF MINERAL OIL, THE COMPONENTS OF WHICH HAVE A BOILING POINT OF AT LEAST 150*C. AND HAVE INCORPORATED THEREIN 0.2-10% OF A METALLIC SALT OF A CYCLIC CARBOXYLIC ACID.
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) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |