Patent US3000829A successfully refreshed from Google Patents.
US3000829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and process for descaling metal parts
Assignee: Purex Corp Ltd
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Filing: 1958-06-12
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Granted: 1961-09-19
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Expires: 1978-06-12
Abstract
No abstract record available.
Inventors
- 👤 Arden Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:58
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/14; C23G1/20; C23G1/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A COMPOSITION OF MATTER WHICH WHEN DISSOLVED IN WATER FORMS AN ALKALINE SOLUTION SUITABLE FOR REMOVAL OR CONDITIONING OF HEAT SCALE FROM ENGINE COMPONENT PARTS, WHICH CONSISTS ESSENTIALLY OF ALKALI METAL HYDROXIDE, A SOLUBLE PERMANGANATE AND A SOLUBLE FLUORIDE WHICH PRODUCES THE FLUORIDE ION IN SAID ALKALINE SOLUTION.
Claim 2
Dependent Claim
48 words
A COMPOSITION OF MATTER WHICH WHEN DISSOLVED IN WATER FORMS AN ALKALINE SOLUTION SUITABLE FOR REMOVAL OR CONDITIONING OF HEAT SCALE FROM ENGINE COMPONENT PARTS, WHICH CONSISTS ESSENTIALLY OF ALKALI METAL HYDROXIDE, A SOLUBLE PERMANGANATE AND A SOLUBLE FLUORIDE WHICH PRODUCES THE FLUORIDE ION IN SAID ALKALINE SOLUTION.
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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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |