US2632730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for electrolytically removing tarnish from silver articles
Assignee: Individual
•
Filing: 1950-04-29
•
Granted: 1953-03-24
•
Expires: 1970-04-29
Abstract
No abstract record available.
Inventors
- 👤 Brannan Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:32
CPC Classifications
C; C25; C25F; C25F1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR CLEANING SILVER ARTICLES BY GALVANIC ACTION WHICH COMPRISES AGITATING SILVER ARTICLES IN CONTACT WITH THE INTERIOR OF A ROTATING ZINC DRUM, SAID DRUM CONTAINING A SOLUTION CONSISTING OF WATER, SALT AND SOAP, THE SAID SOAP BEING INSOLUBLE AND PRESENT IN THE FORM OF GLOBULES, WHEREBY TARNISH IS REMOVED FROM THE SAID SILVER BY GALVANIC ACTION AND BURNISHED BY CONTACT WITH THE SAID SOAP GLOBULES.
Claim 2
Dependent Claim
67 words
A PROCESS FOR CLEANING SILVER ARTICLES BY GALVANIC ACTION WHICH COMPRISES AGITATING SILVER ARTICLES IN CONTACT WITH THE INTERIOR OF A ROTATING ZINC DRUM, SAID DRUM CONTAINING A SOLUTION CONSISTING OF WATER, SALT AND SOAP, THE SAID SOAP BEING INSOLUBLE AND PRESENT IN THE FORM OF GLOBULES, WHEREBY TARNISH IS REMOVED FROM THE SAID SILVER BY GALVANIC ACTION AND BURNISHED BY CONTACT WITH THE SAID SOAP GLOBULES.
References Cited (Backward Citations)
US293528A
Cited
US1035633A
Cited
US1068568A
Cited
US1139683A
Cited
US1601511A
Cited
US1983401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |