US3257299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method for electrolytic stripping of coatings from metals
Assignee: Hooker Chemical Corp
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Filing: 1961-09-26
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Granted: 1966-06-21
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Expires: 1981-09-26
Abstract
No abstract record available.
Inventors
- 👤 Mekjean Matthew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:45
CPC Classifications
C; C25; C25F; C25F5/00; C25F1/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
89 words
A METHOD OF STRIPPING A SURFACE COATING FROM A METALLIC WORKPIECE WHICH COMPRISES CONTACTING A COATED WORKPIECE WITH AN ELECTROLYTE IN AN ELECTROCHEMICAL SYSTEM SAID ELECTROLYTE CONSISTING ESSENTIALLY OF A MOLTEN BATH FOR THE ELECTROLYTIC STRIPPING OF SURFACE COATINGS FROM THE METAL RESULTING FROM FUSING TOGETHER AT LEAST 50 PERCENT OF AN ALKALI METAL HYDROXIDE WITH 1 TO 50 PERCENT OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF SULFATES, STANNATES, ZINCATES, PLUMBATES, SILICATES, MOLYBDATES, TITANATES, ZIRCONATES FLUOTITANATES FLUOZIRCONATES, AND MIXTURES THEREOF, AND BEING SUBSTANTIALLY NON-REACTIVE WITH SAID WORKPIECE.
Claim 2
Independent Claim
89 words
A METHOD OF STRIPPING A SURFACE COATING FROM A METALLIC WORKPIECE WHICH COMPRISES CONTACTING A COATED WORKPIECE WITH AN ELECTROLYTE IN AN ELECTROCHEMICAL SYSTEM SAID ELECTROLYTE CONSISTING ESSENTIALLY OF A MOLTEN BATH FOR THE ELECTROLYTIC STRIPPING OF SURFACE COATINGS FROM THE METAL RESULTING FROM FUSING TOGETHER AT LEAST 50 PERCENT OF AN ALKALI METAL HYDROXIDE WITH 1 TO 50 PERCENT OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF SULFATES, STANNATES, ZINCATES, PLUMBATES, SILICATES, MOLYBDATES, TITANATES, ZIRCONATES FLUOTITANATES FLUOZIRCONATES, AND MIXTURES THEREOF, AND BEING SUBSTANTIALLY NON-REACTIVE WITH SAID WORKPIECE.
Claim 3
Dependent Claim
65 words
A NONOXIDIZING COMPOSITION ADAPTED FOR USE AS A MOLTEN BATH FOR THE ELECTROLYTIC STRIPPING OF SURFACE COATINGS FROM METAL WHICH CONSISTS ESSENTIALLY OF THE PRODUCT RESULTING FROM FUSING TOGETHER AT LEAST FIFTY PERCENT OF AN ALKALI METAL HYDROXIDE WITH 1 TO 50 PERCENT OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF SULFATES, STANNATES, ZINCATES, PLUMBATES, SILICATES, MOLYBDATES, TITANATES, ZIRCONATES, FLUOTITANATES, FLUOZIRCONATES AND MIXTURES THEREOF.
Claim 4
Dependent Claim
65 words
A NONOXIDIZING COMPOSITION ADAPTED FOR USE AS A MOLTEN BATH FOR THE ELECTROLYTIC STRIPPING OF SURFACE COATINGS FROM METAL WHICH CONSISTS ESSENTIALLY OF THE PRODUCT RESULTING FROM FUSING TOGETHER AT LEAST FIFTY PERCENT OF AN ALKALI METAL HYDROXIDE WITH 1 TO 50 PERCENT OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF SULFATES, STANNATES, ZINCATES, PLUMBATES, SILICATES, MOLYBDATES, TITANATES, ZIRCONATES, FLUOTITANATES, FLUOZIRCONATES AND MIXTURES THEREOF.
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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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |