US3033802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of reduced metal catalyst and apparatus therefor
Assignee: Chemetron Corp
•
Filing: 1959-05-22
•
Granted: 1962-05-08
•
Expires: 1979-05-22
Abstract
No abstract record available.
Inventors
- 👤 Chester L Pedigo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:16
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J25/00; B01J25/02; B01J33/00; B01J37/00; B01J37/12; B01J37/14; B01J23/755; B01J23/90; B01J37/02; B01J37/0201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD OF STABILIZING A PYROPHORIC ACID REDUCED METAL CATALYST AGAINST ATMOSPHERIC OXIDATION, WHICH COMPRISES ENTERING SAID REDUCED METAL CATALYST IN A STREAM OF NONOXIDIZING CARRIER GAS, INTRODUCING A STREAM OF GAS CONTAINING A CONTROLLED QUANTITY OF OXYGEN INTO SAID CARRIER GAS STREAM, SUBSEQUENTLY INTRODUCING FURTHER QUANTITITES OF OXYGEN INTO SAID CARRIER GAS TO PRODUCE PROGRESSIVELY HIGHER CONCENTRATIONS OF OXYGEN IN SAID CARRIER GAS UNTIL SAID REDUCED METAL CATALYST IS STABILIZED AGAINST OXIDATION BY GASEOUS OXYGEN, AND SEPARATING SAID CATALYST FROM SAID CARRIER GAS.
Claim 2
Independent Claim
84 words
A METHOD OF STABILIZING A PYROPHORIC ACID REDUCED METAL CATALYST AGAINST ATMOSPHERIC OXIDATION, WHICH COMPRISES ENTERING SAID REDUCED METAL CATALYST IN A STREAM OF NONOXIDIZING CARRIER GAS, INTRODUCING A STREAM OF GAS CONTAINING A CONTROLLED QUANTITY OF OXYGEN INTO SAID CARRIER GAS STREAM, SUBSEQUENTLY INTRODUCING FURTHER QUANTITITES OF OXYGEN INTO SAID CARRIER GAS TO PRODUCE PROGRESSIVELY HIGHER CONCENTRATIONS OF OXYGEN IN SAID CARRIER GAS UNTIL SAID REDUCED METAL CATALYST IS STABILIZED AGAINST OXIDATION BY GASEOUS OXYGEN, AND SEPARATING SAID CATALYST FROM SAID CARRIER GAS.
References Cited (Backward Citations)
US2677669A
Cited
US2677668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |