Patent US3464928A successfully refreshed from Google Patents.
US3464928A
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Process for forming refractory-oxide-containing gel beads
Assignee: KONINKL ZWAVELSUURFABRIEKEN VO
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Filing: 1966-07-12
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Granted: 1969-09-02
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Expires: 1986-07-12
Abstract
No abstract record available.
Inventors
- 👤 Hans Mathies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:24
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/03; B01J37/036; B01J2/00; B01J2/02; B01J2/06; B01J2/08; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J35/00; B01J35/50; B01J35/51; B01J37/0072; C; C01; C01F; C01F7/00; C01F7/02; C01F7/34; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/10; C01P2006/12; C01P2006/14; C01P2006/16; C01P2006/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22196E
Cited
US2384945A
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US2503913A
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US2532497A
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US2643231A
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US2689226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |