Patent US2787904A successfully refreshed from Google Patents.
US2787904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constituent potential measuring apparatus
Assignee: Honeywell Inc
•
Filing: 1953-06-29
•
Granted: 1957-04-09
•
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
2026-11-05 11:06
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/002; G01N15/00; G01N15/08; G01N27/02; G01N27/04; G01N27/12; G01N7/00; G01N7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
APPARATUS FOR DETERMINING THE CARBON POTENTIAL OF A HEAT TREATING ATMOSPHERE COMPRISING, A PAIR OF FERROUS ELEMENTS HAVING DIFFERENT BASIC COMPONENTS THEREIN ADAPTED TO BE POSITIONED DIRECTLY WITHIN A SPACE CONTAINING THE HEAT TREATING ATMOSPHERE SO THAT SAID ELEMENTS WILL SORB AN AMOUNT OF CARBON DEPENDENT UPON THE CARBON POTENTIAL OF THE ATMOSPHERE, AND ELECTRICAL RESISTANCE MEASURING MEANS CONNECTED TO SAID ELEMENTS, TO MEASURE THE RESISTANCE DIFFERENCE BETWEEN SAID ELEMENTS, SAID RESISTANCE DIFFERENCE INDICATING THE CARBON POTENTIAL OF THE HEAT TREATING ATMOSPHERE.
Claim 2
Dependent Claim
82 words
APPARATUS FOR DETERMINING THE CARBON POTENTIAL OF A HEAT TREATING ATMOSPHERE COMPRISING, A PAIR OF FERROUS ELEMENTS HAVING DIFFERENT BASIC COMPONENTS THEREIN ADAPTED TO BE POSITIONED DIRECTLY WITHIN A SPACE CONTAINING THE HEAT TREATING ATMOSPHERE SO THAT SAID ELEMENTS WILL SORB AN AMOUNT OF CARBON DEPENDENT UPON THE CARBON POTENTIAL OF THE ATMOSPHERE, AND ELECTRICAL RESISTANCE MEASURING MEANS CONNECTED TO SAID ELEMENTS, TO MEASURE THE RESISTANCE DIFFERENCE BETWEEN SAID ELEMENTS, SAID RESISTANCE DIFFERENCE INDICATING THE CARBON POTENTIAL OF THE HEAT TREATING ATMOSPHERE.
References Cited (Backward Citations)
US2149441A
Cited
US2255551A
Cited
US2279231A
Cited
US2279397A
Cited
US2596992A
Cited
US2541857A
Cited
US2459618A
Cited
US2583930A
Cited
US2698222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-08 | 1960-10-08 | 1961-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-08 | 1964-10-08 | 1965-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-08 | 1968-10-08 | 1969-04-09 | $7700.00 | Window Closed / Lapsed |