Patent US2548727A successfully refreshed from Google Patents.
US2548727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of nickel carbonyl
Assignee: Rohm and Haas Co
•
Filing: 1948-01-22
•
Granted: 1951-04-10
•
Expires: 1968-01-22
Abstract
No abstract record available.
Inventors
- 👤 John F Kincaid
- 👤 James S Strong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:59
CPC Classifications
C; C01; C01G; C01G53/00; C01G53/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
THE PROCESS OF MAKING NICKEL CARBONYL WHEREIN A FLUID AQUEOUS SLURRY OF A FRESHLY PRECIPITATED HYDRATED NICKEL OXIDE PREPARED BY MIXING IN WATER A WATER-SOLUBLE NICKEL SALT, A MEMBER OF THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH HYDRODIDES AND FROM 4 TO 12 MOLE PER CENT, BASED ON THE NICKEL SALT, OF AT LEAST ONE MEMBER FROM THE GROUP CONSISTING OF WATER-SOLUBLE SULFIDES AND WATER-SOLUBLE THIOSULFATES IS REACTED WITH CARBON MONOXIDE UNDER A PRESSURE IN EXCESS OF 1000 POUNDS PER SQUARE INCH UNDER ALKALINE CONDITIONS AND AT A TEMPERATURE OF FROM 60* TO 200* C.
Claim 2
Dependent Claim
96 words
THE PROCESS OF MAKING NICKEL CARBONYL WHEREIN A FLUID AQUEOUS SLURRY OF A FRESHLY PRECIPITATED HYDRATED NICKEL OXIDE PREPARED BY MIXING IN WATER A WATER-SOLUBLE NICKEL SALT, A MEMBER OF THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH HYDRODIDES AND FROM 4 TO 12 MOLE PER CENT, BASED ON THE NICKEL SALT, OF AT LEAST ONE MEMBER FROM THE GROUP CONSISTING OF WATER-SOLUBLE SULFIDES AND WATER-SOLUBLE THIOSULFATES IS REACTED WITH CARBON MONOXIDE UNDER A PRESSURE IN EXCESS OF 1000 POUNDS PER SQUARE INCH UNDER ALKALINE CONDITIONS AND AT A TEMPERATURE OF FROM 60* TO 200* C.
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) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |