Patent US2812308A successfully refreshed from Google Patents.
US2812308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing supported catalyst for oxidation of alcohols to aldehydes
Assignee: Reichhold Chemicals Inc
•
Filing: 1954-08-27
•
Granted: 1957-11-05
•
Expires: 1974-08-27
Abstract
No abstract record available.
Inventors
- 👤 Frederic J Shelton
- 👤 Eugene M Barrentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:47
CPC Classifications
B; B01; B01J; B01J21/00; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/881; C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/37; C07C45/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR PRODUCING AN INACTIVE SUPPORTED CATALYST PRECURSOR SUITABLE FOR CONVERSION INTO AN ACTIVE METHANOL TO FORMALDEHYDE OXIDATION CATALYST BY AIR BLOWING IN A FORMALDEHYDE CONVERTER, WHICH PROCESS COMPRISES ADMIXING AQUEOUS SOLUTIONS OF (1) AMMONIUM MOLYBDATE, AND (2) FERRIC AMMONIUM OXALATE, AND FORMING THEREFROM A COATING UPON A CARRIER SELECTED FROM A GROUP CONSISTING OF CARBIDES AND SINTERED IRON OXIDE AND PARTIALLY DRYING SAID COATING TO A MOISTURE CONTENT OF FROM 2 TO 25% BY WEIGHT OF THE COATING, THE PARTIALLY DRIED COATING HAVING A MOLAR RATIO OF MOO3 TO FE2O3 OF BETWEEN 3.4 AND 11.1.
Claim 2
Dependent Claim
97 words
A PROCESS FOR PRODUCING AN INACTIVE SUPPORTED CATALYST PRECURSOR SUITABLE FOR CONVERSION INTO AN ACTIVE METHANOL TO FORMALDEHYDE OXIDATION CATALYST BY AIR BLOWING IN A FORMALDEHYDE CONVERTER, WHICH PROCESS COMPRISES ADMIXING AQUEOUS SOLUTIONS OF (1) AMMONIUM MOLYBDATE, AND (2) FERRIC AMMONIUM OXALATE, AND FORMING THEREFROM A COATING UPON A CARRIER SELECTED FROM A GROUP CONSISTING OF CARBIDES AND SINTERED IRON OXIDE AND PARTIALLY DRYING SAID COATING TO A MOISTURE CONTENT OF FROM 2 TO 25% BY WEIGHT OF THE COATING, THE PARTIALLY DRIED COATING HAVING A MOLAR RATIO OF MOO3 TO FE2O3 OF BETWEEN 3.4 AND 11.1.
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) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |