US3842017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for depositing noble metal catalysts on oxide carriers
Assignee: Corning Glass Works
•
Filing: 1972-12-13
•
Granted: 1974-10-15
•
Expires: 1992-12-13
Abstract
Abstract 1. IN A PROCESS FOR DEPOSITING A NOBLE METAL CATALYST ON A REFRACTORY METAL OXIDE CARRIER WHICH COMPRISES THE STEP OF CONTACTING THE REFRACTORY METAL OXIDE CARRIER WITH A SOLUTION CONTAINING A FORMIC ACID REDUCTANT AND NOBLE METAL IONS SELECTED FROM THE GROUP CONSISTING OF PALTINUM, PALLADIUM, RHODIUM, GOLD, SILVER AND MIXTURES THEREOF, THE IMPROVEMENT WHICH COMPRISES THE ADDITION OF UREA TO THE SOLUTION IN AN AMOUNT RANGING ABOUT 1-110% BY WEIGHT THEREOF.
Inventors
- 👤 W Armistead
- 👤 T Elmer
- 👤 I Lichtenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:28
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J35/00; B01J35/50; B01J35/56; B01J35/57; B01J37/00; B01J37/02; B01J37/0201; B01J37/0203; B01J37/0207; B01J37/16; Y; Y10; Y10S; Y10S502/00; Y10S502/506; Y10S502/509
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A PROCESS FOR DEPOSITING A NOBLE METAL CATALYST ON A REFRACTORY METAL OXIDE CARRIER WHICH COMPRISES THE STEP OF CONTACTING THE REFRACTORY METAL OXIDE CARRIER WITH A SOLUTION CONTAINING A FORMIC ACID REDUCTANT AND NOBLE METAL IONS SELECTED FROM THE GROUP CONSISTING OF PALTINUM, PALLADIUM, RHODIUM, GOLD, SILVER AND MIXTURES THEREOF, THE IMPROVEMENT WHICH COMPRISES THE ADDITION OF UREA TO THE SOLUTION IN AN AMOUNT RANGING ABOUT 1-110% BY WEIGHT THEREOF.
Claim 2
Dependent Claim
72 words
IN A PROCESS FOR DEPOSITING A NOBLE METAL CATALYST ON A REFRACTORY METAL OXIDE CARRIER WHICH COMPRISES THE STEP OF CONTACTING THE REFRACTORY METAL OXIDE CARRIER WITH A SOLUTION CONTAINING A FORMIC ACID REDUCTANT AND NOBLE METAL IONS SELECTED FROM THE GROUP CONSISTING OF PALTINUM, PALLADIUM, RHODIUM, GOLD, SILVER AND MIXTURES THEREOF, THE IMPROVEMENT WHICH COMPRISES THE ADDITION OF UREA TO THE SOLUTION IN AN AMOUNT RANGING ABOUT 1-110% BY WEIGHT THEREOF.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |