US3211669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activating and reactivating nickel sulfide catalysts
Assignee: California Research LLC
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Filing: 1961-09-21
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Granted: 1965-10-12
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Expires: 1981-09-21
Abstract
No abstract record available.
Inventors
- 👤 Jack W Unverferth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:30
CPC Classifications
B; B01; B01J; B01J8/00; B01J27/00; B01J27/02; B01J27/04; B01J27/043; B01J27/28; B01J27/30; C; C10; C10G; C10G49/00; C10G49/02; B01J37/00; B01J37/20; B01J38/00; B01J38/04; B01J38/10; B01J38/12; B01J38/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE METHOD OF ACTIVATING ACATALYST COMPRISING NICKEL SULFIDE ON A REFRACTORY OXIDE SUPPORT, WHICH COMPRISES SEQUENTIALLY CONVERTING THE NCKEL SULFIDE COMPONENT FIRST TO NICKEL OXIDE BY CONTACTING THE CATALYST WITH A COMBUSTION-SUPPORTING GAS, THEN TO REDUCED NICKEL BY CONTACTING WITH A REDUCING GAS COMPRISING HYDROGEN, THEN BACK TO NICKEL OXIDE BY CONTACTING THE CATALYST WITH A COMBUSTION-SUPPORTING GAS, AND FINALLY TO NICKEL SULFIDE BY CONTACTING WITH A SULFIDING MEDIUM.
Claim 2
Independent Claim
69 words
THE METHOD OF ACTIVATING ACATALYST COMPRISING NICKEL SULFIDE ON A REFRACTORY OXIDE SUPPORT, WHICH COMPRISES SEQUENTIALLY CONVERTING THE NCKEL SULFIDE COMPONENT FIRST TO NICKEL OXIDE BY CONTACTING THE CATALYST WITH A COMBUSTION-SUPPORTING GAS, THEN TO REDUCED NICKEL BY CONTACTING WITH A REDUCING GAS COMPRISING HYDROGEN, THEN BACK TO NICKEL OXIDE BY CONTACTING THE CATALYST WITH A COMBUSTION-SUPPORTING GAS, AND FINALLY TO NICKEL SULFIDE BY CONTACTING WITH A SULFIDING MEDIUM.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |