US2888332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for quantitative determination of sulfur
Assignee: Lindberg Engineering Co
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Filing: 1955-05-16
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Granted: 1959-05-26
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Expires: 1975-05-16
Abstract
No abstract record available.
Inventors
- 👤 William K Aites
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:12
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN AN APPARATUS FOR DETERMINING THE SULFUR CONTENT OF AN UNKNOWN SAMPLE OF MATERIAL CONTAINING SULFUR, SAID APPARATUS BEING OF THE TYPE COMPRISING A CRUCIBLE FOR HOLDING THE SAMPLE, A COMBUSTION TUBE ENCLOSING SAID CRUCIBLE, MEANS FOR PASSING OXYGEN THROUGH SAID TUBE, A HIGH-FREQUENCY COIL EMBRACING THE PORTION OF THE TUBE SURROUNDING THE CRUCIBLE, AND MEANS CONNECTING WITH THE COMBUSTION TUBE FOR ABSORPTION OF OXIDIZED SULFUR, THE IMPROVEMENT CONSISTING OF A SECONDARY HEATER MADE OF CONDUCTIVE MATERIAL MOUNTED ABOVE THE MOUTH OF THE CRUCIBLE.
Claim 2
Dependent Claim
84 words
IN AN APPARATUS FOR DETERMINING THE SULFUR CONTENT OF AN UNKNOWN SAMPLE OF MATERIAL CONTAINING SULFUR, SAID APPARATUS BEING OF THE TYPE COMPRISING A CRUCIBLE FOR HOLDING THE SAMPLE, A COMBUSTION TUBE ENCLOSING SAID CRUCIBLE, MEANS FOR PASSING OXYGEN THROUGH SAID TUBE, A HIGH-FREQUENCY COIL EMBRACING THE PORTION OF THE TUBE SURROUNDING THE CRUCIBLE, AND MEANS CONNECTING WITH THE COMBUSTION TUBE FOR ABSORPTION OF OXIDIZED SULFUR, THE IMPROVEMENT CONSISTING OF A SECONDARY HEATER MADE OF CONDUCTIVE MATERIAL MOUNTED ABOVE THE MOUTH OF THE CRUCIBLE.
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) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |