US3606540A
Expired / Lapsed
US
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Analysis of molten materials
Assignee: British Iron and Steel Research Association BISRA
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Filing: 1969-09-29
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Granted: 1971-09-20
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Expires: 1989-09-29
Abstract
Abstract THIS INVENTION CONCERNS MOLTEN MATERIAL ANALYSIS APPARATUS IN WHICH THERE IS MEANS FOR REDUCING OR PREVENTING BUILD UP OF PARTICULATE MATERIAL SAMPLE ON THE WALL OF A CONDUIT CARRYING SAID SAMPLE FROM AN ATOMIZER WHICH EXTRACTS THE SAMPLE FROM A MELT TOWARDS AN ANALYSIS STATION. THE INVENTION ALSO CONCERSN PLASMA JET APPARATUS FOR ANALYSING A PARTICULATE SAMPLE WHICH APPARATUS HAS MEANS FOR PREVENTING SAMPLE BUILD UP BETWEEN THE DELIVERY END OF A CONDUIT FEEDING THE SAMPLE TO THE APPARATUS AND A PROXIMATE ELECTRODE OF THE APPARATUS.
Inventors
- 👤 Royson Vaughan Williams
- 👤 Bruce Bennett Fulford
- 👤 Edmund Arthur Du Bois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:52
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/71; G01N21/714; G01N33/00; G01N33/20; G01N33/202; G01N33/2022; G01N33/2025
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References Cited (Backward Citations)
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |