Patent US3724406A successfully refreshed from Google Patents.
Patent US2581951A successfully refreshed from Google Patents.
US2581951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper compounds and manufacture
Assignee: —
•
Filing: —
•
Granted: 1952-01-08
•
Expires: 1969-01-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:15
CPC Classifications
A; A01; A01N; A01N59/00; A01N59/16; A01N59/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS OF MAKING HIGHLY BASIC COPPERCONTAINING COMPOSITIONS COMPRISING TREATING SOLID PARTICLES OF COPPER HYDROXIDE WITH COPPER SULFATE, COPPER CHLORIDE AND AMMONIUM CHLORIDE IN AQUEOUS MEDIUM IN THE FORM OF A SLURRY, CONTINUING THE TREATMENT WHILE MAINTAINING THE SOLID PARTICLES IN SUSPENSION BY AGITATING THE MIXTURE UNTIL THE SOLID PORTION THEREOF HAS BETWEEN 4 AND 15 CU (OH)2 GROUPS PER COPPER ATOM ATTACHED TO SO4 AND CL2 AND THEN SEPARATING THE
Claim 2
Dependent Claim
71 words
A PROCESS OF MAKING HIGHLY BASIC COPPERCONTAINING COMPOSITIONS COMPRISING TREATING SOLID PARTICLES OF COPPER HYDROXIDE WITH COPPER SULFATE, COPPER CHLORIDE AND AMMONIUM CHLORIDE IN AQUEOUS MEDIUM IN THE FORM OF A SLURRY, CONTINUING THE TREATMENT WHILE MAINTAINING THE SOLID PARTICLES IN SUSPENSION BY AGITATING THE MIXTURE UNTIL THE SOLID PORTION THEREOF HAS BETWEEN 4 AND 15 CU (OH)2 GROUPS PER COPPER ATOM ATTACHED TO SO4 AND CL2 AND THEN SEPARATING THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |