US3063858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor source and processes for vaporizing iron, nickel and copper
Assignee: National Research Corp
•
Filing: 1959-07-22
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Granted: 1962-11-13
•
Expires: 1979-07-22
Abstract
No abstract record available.
Inventors
- 👤 Robert W Steeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:53
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/243; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31536
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A REFRACTORY OXIDE CRUCIBLE HAVING A BORON NITRIDE SURFACE AND CAPABLE OF BEING INDUCTIVELY HEATED BY AN ELECTRO-MAGNETIC FIELD TO A TEMPERATURE SUFFICIENTLY HIGH TO PERMIT VAPORIZATION OF A METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL, COPPER AND IRON, SAID CRUCIBLE BEING SUBSTANTIALLY COMPLETELY RESISTANT TO ATTACK BY SAID MOLTEN METALS, THE SURFACE OF THE BORON NITRIDE CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF SAID METAL AND BORON NITRODE.
Claim 2
Dependent Claim
70 words
A REFRACTORY OXIDE CRUCIBLE HAVING A BORON NITRIDE SURFACE AND CAPABLE OF BEING INDUCTIVELY HEATED BY AN ELECTRO-MAGNETIC FIELD TO A TEMPERATURE SUFFICIENTLY HIGH TO PERMIT VAPORIZATION OF A METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL, COPPER AND IRON, SAID CRUCIBLE BEING SUBSTANTIALLY COMPLETELY RESISTANT TO ATTACK BY SAID MOLTEN METALS, THE SURFACE OF THE BORON NITRIDE CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF SAID METAL AND BORON NITRODE.
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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) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |