US3260619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and compositions for cleaning metal
Assignee: Kolene Corp
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Filing: 1965-02-04
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Granted: 1966-07-12
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Expires: 1985-02-04
Abstract
No abstract record available.
Inventors
- 👤 Robert H Shoemaker
- 👤 Geschwender Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:29
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A METHOD OF REMOVING SCALE AND GLASS FROM A STAINLESS STEEL PRODUCT MANUFACTURED BY A HIGH TEMPERATURE PROCESS UTILIZING GLASS AS A LUBRICATING MATERIAL COMPRISING IMMERSING THE STAINLESS STEEL PRODUCT IN A MOLTEN BATH CONSISTING ESSENTIALLY OF FROM 9-15 WEIGHT PERCENT SODIUM NITRATE, FROM 5-15 WEIGHT PERCENT SODIUM CHLORIDE, FROM 8-20 WEIGHT PERCENT POTASSIUM HYDROXIDE AND FROM 50-78 WEIGHT PERCENT SODIUM HYDROXIDE, THE WEIGHT RATIO OF POTASSIUM HYDROXIDE TO SODIUM HYDROXIDE BEING AT LEAST 0.1 AND NOT SUBSTANTIALLY IN EXCESS OF 0.4 FOR AT LEAST 30 SECONDS, MAINTAINING SAID BATH AT A TEMPERATURE ABOVE ITS MELTING POINT DURING THE IMMERSION, AND REMOVING THE STAINLESS STEEL PRODUCT FROM THE BATH.
Claim 2
Dependent Claim
32 words
A METHOD IN ACCORDANCE WTH CLAIM 6 FURTHER INCLUDING THE STEPS OF WASHING THE STAINLESS STEEL PRODUCT IN WATER, AND SUBJECTING THE SAME TO A PICKLING TREATMENT IN A DILUTE ACID SOLUTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |