Patent US3349013A successfully refreshed from Google Patents.
US3349013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic recording process and materials
Assignee: Stewart Warner Corp
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Filing: 1964-01-22
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Granted: 1967-10-24
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Expires: 1984-01-22
Abstract
No abstract record available.
Inventors
- 👤 Eugene F Barnes
- 👤 Carole N Urbanski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:03
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/23; B; B41; B41M; B41M5/00; B41M5/20; B41M5/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN A PROCESS OF ELECTROLYTIC FACSIMILE RECORDING WHEREIN AN ANODIC METAL IS DISSOLVED IN AN ELECTROLYTICALLY CONDUCTING RECORDING MEDIUM BY ELECTROCHEMICAL OXIDATION OF THE METAL TO FORM SOLUBLE METAL IONS AND THE DISSOLVED METAL IS DEPOSITED ON THE RECORDING MEDIUM AS A MARKING SUBSTANCE, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS THE RECORDING MEDIUM A SUPPORT IMPREGNATED WITH AN ELECTROLYTICALLY CONDUCTING SOLUTION CONTAINING A FORMALDEHYDE SULFOXYLATE REDUCING AGENT IN AN AMOUNT SUFFICIENT TO DEPOSIT SAID DISSOLVED METAL ON THE MEDIUM AS A MARKING SUBSTANCE.
Claim 2
Dependent Claim
83 words
IN A PROCESS OF ELECTROLYTIC FACSIMILE RECORDING WHEREIN AN ANODIC METAL IS DISSOLVED IN AN ELECTROLYTICALLY CONDUCTING RECORDING MEDIUM BY ELECTROCHEMICAL OXIDATION OF THE METAL TO FORM SOLUBLE METAL IONS AND THE DISSOLVED METAL IS DEPOSITED ON THE RECORDING MEDIUM AS A MARKING SUBSTANCE, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS THE RECORDING MEDIUM A SUPPORT IMPREGNATED WITH AN ELECTROLYTICALLY CONDUCTING SOLUTION CONTAINING A FORMALDEHYDE SULFOXYLATE REDUCING AGENT IN AN AMOUNT SUFFICIENT TO DEPOSIT SAID DISSOLVED METAL ON THE MEDIUM AS A MARKING SUBSTANCE.
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |