US2886478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and control apparatus for carburizing ferrous objects
Assignee: Honeywell Inc
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Filing: 1953-06-29
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Granted: 1959-05-12
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Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Richard B Beard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:30
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/20; C23C8/22; C21; C21D; C21D1/00; C21D1/74; C21D1/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
APPARATUS FOR CONTROLLING THE ATMOSPHERE OF A HEAT TREATING FURNACE COMPRISING, HYDROGEN SENSING MEANS FOR DETERMINING THE PERCENT HYDROGEN PRESENT IN AN ATMOSPHERE USED IN THE FURNACE, CONSTITUENT POTENTIAL MEASURING MEANS, AND AN ATMOSPHERE CONTROLLING MEANS CONNECTED TO BE CONTROLLED BY SAID HYDROGEN SENSING MEANS AND SAID CONSTITUENT POTENTIAL MEASURING MEANS.
Claim 2
Dependent Claim
51 words
APPARATUS FOR CONTROLLING THE ATMOSPHERE OF A HEAT TREATING FURNACE COMPRISING, HYDROGEN SENSING MEANS FOR DETERMINING THE PERCENT HYDROGEN PRESENT IN AN ATMOSPHERE USED IN THE FURNACE, CONSTITUENT POTENTIAL MEASURING MEANS, AND AN ATMOSPHERE CONTROLLING MEANS CONNECTED TO BE CONTROLLED BY SAID HYDROGEN SENSING MEANS AND SAID CONSTITUENT POTENTIAL MEASURING MEANS.
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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) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |