US2694049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium oxde and tungsten oxide contining catalyst
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1949-02-21
•
Granted: 1954-11-09
•
Expires: 1969-02-21
Abstract
No abstract record available.
Inventors
- 👤 Reyolds Peter William
- 👤 Pittwell Laurence Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:20
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/30; C; C07; C07C; C07C29/00; C07C29/03; C07C29/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR PREPARING A CATALYST SUITABLE FOR USE IN REACTIONS ALTERING THE CONTENT OF THE ELEMENTS OF WATER IN CHEMICALLY EQUIVALENT QUANTITIES FORMING PARTS OF THE MOLECULE OF ORGANIC COMPOUNDS COMPRISING IMPREGNATING PARTICULATE TITANIA GEL WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIUM PARATUNGSTATE, AMMONIUM DECATUNGSTATE, AMMONIUM ORTHOTUNGSTATE AND AMMONIUM METATUNGSTATE, AND HEATING THE PRODUCT SO OBTAINED IN A REDUCING ATMOSPHERE TO CONVERT THE TUNGSTEN COMPOUND INTO AN OXIDE OF TUNGSTEN, THE COMPOSITION OF WHICH APPROXIMATES THAT OF W2O5.
Claim 2
Dependent Claim
82 words
A PROCESS FOR PREPARING A CATALYST SUITABLE FOR USE IN REACTIONS ALTERING THE CONTENT OF THE ELEMENTS OF WATER IN CHEMICALLY EQUIVALENT QUANTITIES FORMING PARTS OF THE MOLECULE OF ORGANIC COMPOUNDS COMPRISING IMPREGNATING PARTICULATE TITANIA GEL WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIUM PARATUNGSTATE, AMMONIUM DECATUNGSTATE, AMMONIUM ORTHOTUNGSTATE AND AMMONIUM METATUNGSTATE, AND HEATING THE PRODUCT SO OBTAINED IN A REDUCING ATMOSPHERE TO CONVERT THE TUNGSTEN COMPOUND INTO AN OXIDE OF TUNGSTEN, THE COMPOSITION OF WHICH APPROXIMATES THAT OF W2O5.
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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) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |