US3657155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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: 1969-08-05
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Granted: 1972-04-18
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Expires: 1989-08-05
Abstract
Abstract PROCESS FOR PREPARING AN ATTRITION RESISTANT SOLID CATALYST CONTAINING ATIMONY OXIDE, SUITABLE FOR USE IN A FLUIDIZED BED ESSENTIALLY COMPRISING THE HEAT TREATMENT OF A SLURRY CONTAINING AN ANTIMONY COMPOUND, A FERRIC 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
2026-10-31 22:22
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/18; B01J23/70; B01J23/76; B01J23/84; B01J23/843; B01J23/8435; B01J37/00; B01J37/0009; B01J37/0027; B01J37/0045
Claims Analysis
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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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |