US2887373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleaning metal surfaces
Assignee: Individual
•
Filing: 1948-07-09
•
Granted: 1959-05-19
•
Expires: 1968-07-09
Abstract
No abstract record available.
Inventors
- 👤 Harry W Winkler
- 👤 John W Morfitt
- 👤 Thomas H Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:59
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
2. THE METHOD OF REMOVING URANIUM DEPOSITS FROM SURFACES OF THE CLASS CONSISTING OF COPPER AND COPPER ALLOYS WHICH COMPRISES SUBJECTING SAID SURFACES TO THE ACTION OF A CLEANING AGENT CONSISTING OF AQUEOUS NITRIC ACID AND COPPER NITRATE, THE CONCENTRATION OF SAID COPPER NITRATE BEING FROM 10 TO 90%, BASED ON TOTAL WEIGHT.
Claim 2
Dependent Claim
53 words
2. THE METHOD OF REMOVING URANIUM DEPOSITS FROM SURFACES OF THE CLASS CONSISTING OF COPPER AND COPPER ALLOYS WHICH COMPRISES SUBJECTING SAID SURFACES TO THE ACTION OF A CLEANING AGENT CONSISTING OF AQUEOUS NITRIC ACID AND COPPER NITRATE, THE CONCENTRATION OF SAID COPPER NITRATE BEING FROM 10 TO 90%, BASED ON TOTAL WEIGHT.
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Cited
US2128548A
Cited
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US2408931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |