Patent US3686138A successfully refreshed from Google Patents.
US3686138A
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Production of attrition resistant solid catalysts containing antimony oxide suitable for use in a fluidized bed reaction
Assignee: Mitsubishi Chemical Corp
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Filing: 1969-11-03
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Granted: 1972-08-22
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Expires: 1989-11-03
Abstract
Abstract PROCES FOR PREPARING AN ATTRITION RESISTANT SOLID CATALYST CONTAINING ANTIMONY OXIDE, SUITABLE FOR USE IN A FLUIDIZED BED, ESSENTIALLY COMPRISING THE HEAT TREATMENT OF A SLURRY CONTAINING A PENTAVALENT ANTIMONY COMPOUND, A POLYVALENT METAL COMPOUND AND A SILICA SOL.
Inventors
- 👤 Takachika Yoshino
- 👤 Shigeru Saito
- 👤 Yutaka Sasaki
- 👤 Yoshimi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:10
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/843; B01J23/8435; B01J23/002; B01J23/16; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J2523/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |