US2995501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic recording medium
Assignee: Muirhead and Co Ltd
•
Filing: 1959-09-10
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Granted: 1961-08-08
•
Expires: 1979-09-10
Abstract
No abstract record available.
Inventors
- 👤 Tucker Edwin William
- 👤 Richards Robert Doughty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:28
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/20; B41M5/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN ELECTROLYTIC RECORDING MEDIUM FOR FACSIMILE OR PHOTOELEGRAPHIC RECEIVERS COMPRISING A BASE IMPREGNATED WITH AN AQUEOUS SOLUTION OF AN AMOUNT IN THE RANGE 2% TO 8% OF SOLUTION WEIGHT OF A POLYHYDROXYPHENOLIC COMPOUND, AN AMOUNT IN THE RANGE 5% TO 20% OF SOLUTION WEIGHT OF A SALT OF A STRONG ACID AND AN ALKALI METAL ACTING AS AN ELECTROLYTE, AN AMOUNT IN THE RANGE 5% TO 20% OF SOLUTION WEIGHT OF A CHLORATE OF AN ALKALI METAL ACTING AS AN OXIDIZING AGENT, AND AN AMOUNT IN THE RANGE OF 0.001% TO 0.1% OF SOLUTION WEIGHT OF A WATER-SOLUBLE SALT OF TRIVALENT CERIUM.
Claim 2
Dependent Claim
102 words
AN ELECTROLYTIC RECORDING MEDIUM FOR FACSIMILE OR PHOTOELEGRAPHIC RECEIVERS COMPRISING A BASE IMPREGNATED WITH AN AQUEOUS SOLUTION OF AN AMOUNT IN THE RANGE 2% TO 8% OF SOLUTION WEIGHT OF A POLYHYDROXYPHENOLIC COMPOUND, AN AMOUNT IN THE RANGE 5% TO 20% OF SOLUTION WEIGHT OF A SALT OF A STRONG ACID AND AN ALKALI METAL ACTING AS AN ELECTROLYTE, AN AMOUNT IN THE RANGE 5% TO 20% OF SOLUTION WEIGHT OF A CHLORATE OF AN ALKALI METAL ACTING AS AN OXIDIZING AGENT, AND AN AMOUNT IN THE RANGE OF 0.001% TO 0.1% OF SOLUTION WEIGHT OF A WATER-SOLUBLE SALT OF TRIVALENT CERIUM.
References Cited (Backward Citations)
US2485678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |