US3281288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes and media for quenching metals
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1963-11-27
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Granted: 1966-10-25
•
Expires: 1983-11-27
Abstract
No abstract record available.
Inventors
- 👤 Carver Arthur James
- 👤 Fowler Benjamin Thomas
- 👤 Langton Aubrey Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:17
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A METHOD OF QUENCHING USEFUL IN HEAT TREATMENT OF METALS WHEREIN A METAL TO BE TREATED IS HEATED TO AN ELEVATED TEMPERATURE AND WHEREIN SAID HEATED METAL IS THEN RAPIDLY QUENCHED IN A QUENCHING MEDIUM TO EFFECT DESIRED METALLURGICAL CHANGES IN SAID METAL THE IMPROVEMENT WHICH COMPRISES USING AS SAID QUENCHING MEDIUM A COMPOSITION CONSISTING ESSENTIALLY OF TETRAESTER OF PENTAERYTHRITOL AND ACID HAVING AN AVERAGE CHAIN LENGTH OF FROM ABOUT 14-18 CARBON ATOMS, FROM 0.5 TO ABOUT 1 WT. PERCENT PHENOTHIAZINE, AND FROM 4 TO ABOUT 6 WT. PERCENT OF DI(ALKYLPHENYL) AMINE IN WHICH THE ALKYL GROUPS EACH CONTAIN FROM 4-12 CARBON ATOMS.
Claim 2
Dependent Claim
104 words
IN A METHOD OF QUENCHING USEFUL IN HEAT TREATMENT OF METALS WHEREIN A METAL TO BE TREATED IS HEATED TO AN ELEVATED TEMPERATURE AND WHEREIN SAID HEATED METAL IS THEN RAPIDLY QUENCHED IN A QUENCHING MEDIUM TO EFFECT DESIRED METALLURGICAL CHANGES IN SAID METAL THE IMPROVEMENT WHICH COMPRISES USING AS SAID QUENCHING MEDIUM A COMPOSITION CONSISTING ESSENTIALLY OF TETRAESTER OF PENTAERYTHRITOL AND ACID HAVING AN AVERAGE CHAIN LENGTH OF FROM ABOUT 14-18 CARBON ATOMS, FROM 0.5 TO ABOUT 1 WT. PERCENT PHENOTHIAZINE, AND FROM 4 TO ABOUT 6 WT. PERCENT OF DI(ALKYLPHENYL) AMINE IN WHICH THE ALKYL GROUPS EACH CONTAIN FROM 4-12 CARBON ATOMS.
References Cited (Backward Citations)
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US2889354A
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US2922763A
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US2957022A
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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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |