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US2480672A
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Process for forming porous glass and composition thereof
Assignee: ExxonMobil Oil Corp
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Filing: 1944-08-12
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Granted: 1949-08-30
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Expires: 1964-08-12
Abstract
No abstract record available.
Inventors
- 👤 Charles J Plank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:35
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/78; C; C03; C03C; C03C11/00; C03C11/005; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/076; C03C3/097
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |