US3041285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for cleaning and polishing aluminum and aluminum alloys
Assignee: Purex Corp Ltd
•
Filing: 1955-05-27
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Granted: 1962-06-26
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Expires: 1975-05-27
Abstract
No abstract record available.
Inventors
- 👤 Newman Kenneth Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:01
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/12; C23G1/125; C11; C11D; C11D7/00; C11D7/22; C11D7/26; C11D7/265; C11D7/34
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
A LIQUID COMPOSITION FOR POLISHING ALUMINUM AND ALUMINUM ALLOY SURFACES CONSISTING ESSENTIALLY OF: 1 PART OF THIOUREA; FROM 1 PART TO ABOUT 5 PARTS OF GLYCOLIC ACID, AND FROM ABOUT 10 TO 20 PARTS OF WATER, SAID COMPOSITION HAVING A PH OF BETWEEN ABOUT 2 AND 2.8.
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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) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |