US2830942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrocleaner for brass
Assignee: Individual
•
Filing: 1957-05-24
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Granted: 1958-04-15
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Expires: 1977-05-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert H Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:45
CPC Classifications
C; C25; C25F; C25F1/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
IN A METHOD FOR ELECTROCLEANING BRASS, THE IMPROVEMENT WHICH COMPRISES CLEANING SAID BRASS BY EXPOSING IT TO DIRECT CURRENT IN A BATH CONSISTING ESSENTIALLY OF WATER, FROM FIVE TO FIFTEEN PARTS BY WEIGHT OF GLUCOSE, FROM TWO TO TEN PARTS BY WEIGHT OF SODIUM META SILICATE, AND AN AMOUNT OF CAUSTIC SODA EQUIVALENT TO FROM FIFTEEN TO TWENTY-FIVE PARTS BY WEIGHT OF ONE HUNDRED PERCENT SODIUM HYDROXIDE, ANE THEN EXPOSING SAID BRASS TO REVERSE CURRENT IN A BATH COMPRISING WATER, FROM FIVE TO FIFTEEN PARTS BY WEIGHT OF GLUCOSE, FROM TWO TO TEN PARTS BY WEIGHT OF SODIUM META SILICATE, AND AN AMOUNT OF CAUSTIC SODA EQUIVALENT TO FROM FIFTEEN TO TWENTY-FIVE PARTS BY WEIGHT OF ONE HUNDRED PERCENT SODIUM HYDROXIDE.
References Cited (Backward Citations)
US2615840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |