US3560407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a catalyst coated with samarium oxide
Assignee: FMC Corp
•
Filing: 1967-11-30
•
Granted: 1971-02-02
•
Expires: 1987-11-30
Abstract
Abstract THIS INVENTION RELATES TO A PROCESS OF MAKING A DECOMPOSITION CATALYST FOR CONCENTRATED HYDROGEN PEROXIDE COMPRISING ETCHING AN ALLOY OF SILVER AND PALLADIUM WITH NITRIC ACID AND THEN COATING THE POROUS ALLOY WITH SAMARIUM OXIDE, OBTAINED BY DECOMPOSING SAMARIUM NITRATE BY HEAT.
Inventors
- 👤 James C Mccormick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:36
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/50; B01J35/58; F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/68
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |