US3183196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silica-vanadium oxide oxidation catalyst
Assignee: Nippon Steel Chemical and Materials Co Ltd
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Filing: 1962-05-11
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Granted: 1965-05-11
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Expires: 1982-05-11
Abstract
No abstract record available.
Inventors
- 👤 Watanabe Masami
- 👤 Shirai Kiyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:27
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265; B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22; B01J23/24; B01J23/28; B01J27/00; B01J27/14; B01J27/186; B01J27/195; B01J27/198; C07C51/31; C07C51/313
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR PRODUCING A HIGHLY ACTIVE OXIDATION CATALYST WHICH COMPRISES HYDRATING SOLID SIO2 AT A TEMPERATURE OF BETWEEN 120* TO 250*C. AND AT A PRESSURE OF BETWEEN 2 KG./CM.2 TO 200 KG./CM2, THEREBY PRODUCING SIO2.NH2O WHEREIN N IS A POSITIVE INTEGER FROM 1 TO 2, INTIMATELY ADMIXING SAID SIO2.NH2O AND A VANADIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF VANADIUM PENTOXIDE AND AMMONIUM METAVANDATE THEREBY OBTAINING A PASTY MIXTURE, MOLDING SAID PASTY MIXTURE TO TABLETS, AND FIRING THE THUS OBTAINED TABLETS AT A TEMPERATURE, BELOW 400*C., SUFFICIENT TO DECOMPOSE SAID VANADIUM COMPOUND TO VANADIUM OXIDE.
Claim 2
Dependent Claim
96 words
A PROCESS FOR PRODUCING A HIGHLY ACTIVE OXIDATION CATALYST WHICH COMPRISES HYDRATING SOLID SIO2 AT A TEMPERATURE OF BETWEEN 120* TO 250*C. AND AT A PRESSURE OF BETWEEN 2 KG./CM.2 TO 200 KG./CM2, THEREBY PRODUCING SIO2.NH2O WHEREIN N IS A POSITIVE INTEGER FROM 1 TO 2, INTIMATELY ADMIXING SAID SIO2.NH2O AND A VANADIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF VANADIUM PENTOXIDE AND AMMONIUM METAVANDATE THEREBY OBTAINING A PASTY MIXTURE, MOLDING SAID PASTY MIXTURE TO TABLETS, AND FIRING THE THUS OBTAINED TABLETS AT A TEMPERATURE, BELOW 400*C., SUFFICIENT TO DECOMPOSE SAID VANADIUM COMPOUND TO VANADIUM OXIDE.
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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |