US2866838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing molten silicates
Assignee: Stratabar Process Co
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Filing: 1956-02-16
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Granted: 1958-12-30
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Expires: 1976-02-16
Abstract
No abstract record available.
Inventors
- 👤 Elisha W Paxton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:03
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/20; C03B5/02; C03B5/027; C03B5/03; C03B5/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
A FURNACE FOR PRODUCING MOLTEN SILICATES COMPRISING CONTAINING MEANS FOR SAID MOLTEN SILICATES, SAID CONTAINING MEANS COMMUNICATING WITH A PLURALITY OF SUBMERGED PASSAGES FOR RECEIVING A PLURALITY OF FLOWS OF MOLTEN SILICATES FROM SAID CONTAINING MEANS; AND MEANS FOR SELECTIVELY VARYING THE OPERATING TEMPERATURE OF CERTAIN OF SAID PLURALITY OF FLOWS TO PRODUCE A DESIRED DISTRIBUTION OF FLOW IN SAID PLURALITY OF PASSAGES.
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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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |