US3388047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled electrolytic treatment of materials
Assignee: AT&T Inc
•
Filing: 1965-07-30
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Granted: 1968-06-11
•
Expires: 1985-07-30
Abstract
No abstract record available.
Inventors
- 👤 Ralph M Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/02; C25F3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A METHOD OF TREATING ELECTROLYTICALLY A WORKPIECE COMPRISING: FLOATING A LAYER OF AN ELECTROLYTE ON THE SURFACE OF A NONCONDUCTIVE FLUID TO FORM A TREATMENT BATH, INSERTING THE WORKPIECE INTO THE BATH TO EXPOSE A FIRST SELECTED PORTION THEREOF TO THE ELECTROLYTE LAYER, PASSING CURRENT THROUGH BOTH THE ELECTROLYTE LAYER AND THE WORKPIECE TO ELECTROLYTICALLY TREAT THE FIRST SELECTED PORTION, AND THEN FURTHER INSERTING THE WORKPIECE INTO THE BATH TO TERMINATE THE ELECTROLYTIC TREATMENT OF THE FIRST SELECTED PORTION.
Claim 2
Independent Claim
79 words
A METHOD OF TREATING ELECTROLYTICALLY A WORKPIECE COMPRISING: FLOATING A LAYER OF AN ELECTROLYTE ON THE SURFACE OF A NONCONDUCTIVE FLUID TO FORM A TREATMENT BATH, INSERTING THE WORKPIECE INTO THE BATH TO EXPOSE A FIRST SELECTED PORTION THEREOF TO THE ELECTROLYTE LAYER, PASSING CURRENT THROUGH BOTH THE ELECTROLYTE LAYER AND THE WORKPIECE TO ELECTROLYTICALLY TREAT THE FIRST SELECTED PORTION, AND THEN FURTHER INSERTING THE WORKPIECE INTO THE BATH TO TERMINATE THE ELECTROLYTIC TREATMENT OF THE FIRST SELECTED PORTION.
References Cited (Backward Citations)
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Cited
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Cited
US2545412A
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Cited
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Cited
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Cited
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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) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |