US2612898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning of manufactured jewelry
Assignee: —
•
Filing: —
•
Granted: 1952-10-07
•
Expires: 1969-10-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:57
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE METHOD OF CHEMICALLY CLEANING METAL JEWELRY PARTS MADE OF GOLD-FILLED, KARAT GOLD, SILVER, BRASS, ALLOYS AND THE LIKE TO REMOVE OXIDATION, COMPRISING THE STEPS OF IMMERSING THE JEWELRY PARTS IN A SOLUTION CONTAINING WHEN PREPARED FIVE TO TEN OUNCES BY WEIGHT OF ALKALI METAL CYANIDE AND HYDROGEN, PEROXIDE EQUIVALENT TO 500 TO 300 CC. OF 33% SOLUTION PER 3 1/2 GALLONS OF WATER, AND AGITATING THE JEWELRY PARTS WHILE IMMERSED, THE TIME OF IMMERSION AND AGITATION BEING NOT MORE THAN FIFTEEN MINUTES.
Claim 2
Independent Claim
83 words
THE METHOD OF CHEMICALLY CLEANING METAL JEWELRY PARTS MADE OF GOLD-FILLED, KARAT GOLD, SILVER, BRASS, ALLOYS AND THE LIKE TO REMOVE OXIDATION, COMPRISING THE STEPS OF IMMERSING THE JEWELRY PARTS IN A SOLUTION CONTAINING WHEN PREPARED FIVE TO TEN OUNCES BY WEIGHT OF ALKALI METAL CYANIDE AND HYDROGEN, PEROXIDE EQUIVALENT TO 500 TO 300 CC. OF 33% SOLUTION PER 3 1/2 GALLONS OF WATER, AND AGITATING THE JEWELRY PARTS WHILE IMMERSED, THE TIME OF IMMERSION AND AGITATION BEING NOT MORE THAN FIFTEEN MINUTES.
References Cited (Backward Citations)
US171035A
Cited
US699108A
Cited
US1917489A
Cited
US1939241A
Cited
US2108604A
Cited
US2160391A
Cited
US2166954A
Cited
US2353026A
Cited
US2420262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |