Patent US1295651A successfully refreshed from Google Patents.
Patent US2822372A successfully refreshed from Google Patents.
US2822372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of a stable
Assignee: —
•
Filing: —
•
Granted: 1958-02-04
•
Expires: 1975-02-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:24
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
PROCESS FOR THE PRODUCTION OF A STABLE COMPLEX COMPOUND OF DIACETYLENE AND NICKEL WHICH COMPRISES REACTING DIACETYLENE WITH A SOLUTION OF NICKELOUS CYANIDE IN AQUEOUS AMMONIA OF A DENSITY OF FROM ABOUT 0.92 TO 0.96 AT 15*C., THE CONCENTRATION OF SAID NICKEL COMPOUND BEING ABOUT 2% BY WEIGHT AT A TEMPERATURE WITHIN THE RANGE FROM -15* TO +10*C.
Claim 2
Dependent Claim
58 words
PROCESS FOR THE PRODUCTION OF A STABLE COMPLEX COMPOUND OF DIACETYLENE AND NICKEL WHICH COMPRISES REACTING DIACETYLENE WITH A SOLUTION OF NICKELOUS CYANIDE IN AQUEOUS AMMONIA OF A DENSITY OF FROM ABOUT 0.92 TO 0.96 AT 15*C., THE CONCENTRATION OF SAID NICKEL COMPOUND BEING ABOUT 2% BY WEIGHT AT A TEMPERATURE WITHIN THE RANGE FROM -15* TO +10*C.
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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |