US3417028A
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US
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Process for the preparation of an inorganic gel having a predetermined pore structure
Assignee: BASIL IAN PARSONS
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Filing: 1967-02-10
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Granted: 1968-12-17
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Expires: 1987-02-10
Abstract
No abstract record available.
Inventors
- 👤 Montgomery Douglas Sargent
- 👤 Parsons Basil Ian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:43
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/157; B; B01; B01J; B01J20/00; B01J20/02; B01J20/06; B01J37/00; B01J37/0009; B01J37/0018; Y; Y10; Y10S; Y10S502/00; Y10S502/506; Y10S502/507
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) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |