US2615839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of precious metals from photographic baths
Assignee: Individual
•
Filing: 1948-04-12
•
Granted: 1952-10-28
•
Expires: 1968-04-12
Abstract
No abstract record available.
Inventors
- 👤 Henry O Willier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:12
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/395; G03C5/3954; C; C01; C01G; C01G5/00; C25; C25C; C25C1/00; C25C1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE METHOD OF REMOVING SILVER FROM A PHOTOGRAPHIC FIXING SOLUTION, COMPRISING THE STEPS OF: ESTABLISHING A SUBSTANTIALLY QUIESCENT BODY OF SAID FIXING SOLUTION, ESTABLISHING AN ANODE ZONE WITHIN BUT ADJACENT ONE SIDE OF SAID BODY AND A CATHODE ZONE CONSISTING ESSENTIALLY OF AN ELECTRODEPOSITING ZONE OF SUBSTANTIAL DEPTH WITHIN BUT ADJACENT THE OPPOSITE SIDE OF SAID BODY, PASSING AN ELECTRIC CURRENT FROM SAID ANODE ZONE TO SAID CATHODE ZONE, CAUSING SAID CURRENT TO LEAVE SAID SOLUTION IN SAID CATHODE ZONE THROUGH
Claim 2
Independent Claim
81 words
THE METHOD OF REMOVING SILVER FROM A PHOTOGRAPHIC FIXING SOLUTION, COMPRISING THE STEPS OF: ESTABLISHING A SUBSTANTIALLY QUIESCENT BODY OF SAID FIXING SOLUTION, ESTABLISHING AN ANODE ZONE WITHIN BUT ADJACENT ONE SIDE OF SAID BODY AND A CATHODE ZONE CONSISTING ESSENTIALLY OF AN ELECTRODEPOSITING ZONE OF SUBSTANTIAL DEPTH WITHIN BUT ADJACENT THE OPPOSITE SIDE OF SAID BODY, PASSING AN ELECTRIC CURRENT FROM SAID ANODE ZONE TO SAID CATHODE ZONE, CAUSING SAID CURRENT TO LEAVE SAID SOLUTION IN SAID CATHODE ZONE THROUGH
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |