Patent US3250832A successfully refreshed from Google Patents.
US3250832A
Expired / Lapsed
US
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Process for making refractory articles
Assignee: Arcelor Luxembourg SA
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Filing: 1961-07-13
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Granted: 1966-05-10
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Expires: 1981-07-13
Abstract
No abstract record available.
Inventors
- 👤 Metz Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:02
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B2/00; C04B2/10; C04B2/102; C04B35/00; C04B35/01; C04B35/013; C04B35/03; C04B41/45; C04B41/50; C04B41/5001; C04B41/80; C04B41/81; C04B41/85
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PROCESS FOR MAKING A COHERENT BODY FROM A MASS OF REFRACTORY CERAMIC PARTICLES CONSISTING AT LEAST IN MAJOR PART OF MAGNESIUM COMPOUNDS, COMPRISING THE STEPS OF ADMIXING A THERMALLY UNSTABLE BITUMINOUS HYDROCARBON WITH SAID MASS WHILE THE PARTICLES THEREOF ARE IN AN AT MOST LIGHTLY COHESIVE STATE, INITIALLY HEATING THE MIXTURE THUS OBTAINED TO A DEGREE SUFFICIENT TO COKIFY SAID BINDER
Claim 2
Dependent Claim
62 words
A PROCESS FOR MAKING A COHERENT BODY FROM A MASS OF REFRACTORY CERAMIC PARTICLES CONSISTING AT LEAST IN MAJOR PART OF MAGNESIUM COMPOUNDS, COMPRISING THE STEPS OF ADMIXING A THERMALLY UNSTABLE BITUMINOUS HYDROCARBON WITH SAID MASS WHILE THE PARTICLES THEREOF ARE IN AN AT MOST LIGHTLY COHESIVE STATE, INITIALLY HEATING THE MIXTURE THUS OBTAINED TO A DEGREE SUFFICIENT TO COKIFY SAID BINDER
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |