US3030228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory furnace linings and process for producing same
Assignee: Pechiney SA
•
Filing: 1959-11-09
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Granted: 1962-04-17
•
Expires: 1979-11-09
Abstract
No abstract record available.
Inventors
- 👤 Hernandez Jose
- 👤 Cartoux Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:44
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/03; Y; Y10; Y10T; Y10T428/00; Y10T428/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
PROCESS OF MANUFACTURING A REFACTORY LINING FOR FURNACES, COMPRISING THE STEPS OF: MELTING ELCETRICALLY A REFACTORY MAGNESIA; COMMINUTING THE THUS TREATED MAGNESIA INTO PARTICLES; AGGLOMERATED MASS; AN ORGANIC BINDER, CONSOLIDATING THE AGGLOMERATED MASS; BAKING THE CONSOLIDATED MASS OUT OF CONTACT WITH AIR AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 700-800* C., AND THEREAFTER SINTERING THE BAKED MASS IN AN OXIDIZING ATMOSPHERE AT A TEMPERATURE WITHIN THE RANGE OF 12501800* C.
Claim 2
Dependent Claim
71 words
PROCESS OF MANUFACTURING A REFACTORY LINING FOR FURNACES, COMPRISING THE STEPS OF: MELTING ELCETRICALLY A REFACTORY MAGNESIA; COMMINUTING THE THUS TREATED MAGNESIA INTO PARTICLES; AGGLOMERATED MASS; AN ORGANIC BINDER, CONSOLIDATING THE AGGLOMERATED MASS; BAKING THE CONSOLIDATED MASS OUT OF CONTACT WITH AIR AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 700-800* C., AND THEREAFTER SINTERING THE BAKED MASS IN AN OXIDIZING ATMOSPHERE AT A TEMPERATURE WITHIN THE RANGE OF 12501800* C.
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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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |