US2519672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for bluing metal
Assignee: Individual
•
Filing: 1947-01-13
•
Granted: 1950-08-22
•
Expires: 1967-01-13
Abstract
No abstract record available.
Inventors
- 👤 Charles F Lawless
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:22
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/48; C23C22/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A COMPOSITION OF THE FOLLOWING INGREDIENTS IN WATER: ABOUT FIVE PERCENT BY WEIGHT OF COPPER SULFATE; A TOTAL OF ABOUT FIVE PERCETN BY WEIGHT OF SUILFURIC AND HYDROCHLORIC ACID; LAURYL SULFATE OF THE ORDER OF ONE-THOUSANDTH OF ONE PER CENT; ABOUT ONE PERCENT BY WEIGHT OF TARTARIC ACID; ABOUT ONE-FOURTH OF ONE PERCENT BY WEIGHT OF STANNOUS CHLORIDE; AND ABOUT ONE-HALF PERCENT BY WEIGHT OF GLACIAL ACETIC ACID.
Claim 2
Dependent Claim
68 words
A COMPOSITION OF THE FOLLOWING INGREDIENTS IN WATER: ABOUT FIVE PERCENT BY WEIGHT OF COPPER SULFATE; A TOTAL OF ABOUT FIVE PERCETN BY WEIGHT OF SUILFURIC AND HYDROCHLORIC ACID; LAURYL SULFATE OF THE ORDER OF ONE-THOUSANDTH OF ONE PER CENT; ABOUT ONE PERCENT BY WEIGHT OF TARTARIC ACID; ABOUT ONE-FOURTH OF ONE PERCENT BY WEIGHT OF STANNOUS CHLORIDE; AND ABOUT ONE-HALF PERCENT BY WEIGHT OF GLACIAL ACETIC ACID.
References Cited (Backward Citations)
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US2302510A
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US2054737A
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US2081630A
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US2147415A
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US2288788A
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Cited
US2377593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |