Patent US2636848A successfully refreshed from Google Patents.
US2636848A
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High-speed electrolytic marking
Assignee: RCA Corp
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Filing: 1948-07-19
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Granted: 1953-04-28
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Expires: 1968-07-19
Abstract
No abstract record available.
Inventors
- 👤 Greig Harold Grey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:08
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A METHOD OF ELECTROLYTICALLY MARKING A RELATIVELY MOVING POROUS RECORD SHEET MEMBER, THE STEPS OF MOISTENING THE RECORD MEMBER WITH AN ELECTRICALLY CONDUCTIVE SOLUTION COMPRISING A SALT OF A DIAZOTIZED P-AMINO DIALKYL ANILINE SELECTED FROM THE CLASS CONSISTING OF P-AMINO DIMETHYL ANILINE AND P-AMINO DIETHYL ANILINE, AN AZO COUPLER INCLUDING AT LEAST ONE AROMATIC HYDROXY COMPOUND SELECTED FROM THE CLASS CONSISTING OF PHENOLS AND NAPHTHOLS AND BUFFER MATERIAL, MAINTAINING THE ACIDITY OF THE SOLUTION AT A PH BETWEEN ABOUT 4.5 AND 5.5 WITH THE AID OF THE ACTION OF SAID BUFFER MATERIAL, AND PASSING AN ELECTROLYTIC MARKING CURRENT THROUGH THE MOISTENED RECORD MEMBER.
Claim 2
Dependent Claim
104 words
IN A METHOD OF ELECTROLYTICALLY MARKING A RELATIVELY MOVING POROUS RECORD SHEET MEMBER, THE STEPS OF MOISTENING THE RECORD MEMBER WITH AN ELECTRICALLY CONDUCTIVE SOLUTION COMPRISING A SALT OF A DIAZOTIZED P-AMINO DIALKYL ANILINE SELECTED FROM THE CLASS CONSISTING OF P-AMINO DIMETHYL ANILINE AND P-AMINO DIETHYL ANILINE, AN AZO COUPLER INCLUDING AT LEAST ONE AROMATIC HYDROXY COMPOUND SELECTED FROM THE CLASS CONSISTING OF PHENOLS AND NAPHTHOLS AND BUFFER MATERIAL, MAINTAINING THE ACIDITY OF THE SOLUTION AT A PH BETWEEN ABOUT 4.5 AND 5.5 WITH THE AID OF THE ACTION OF SAID BUFFER MATERIAL, AND PASSING AN ELECTROLYTIC MARKING CURRENT THROUGH THE MOISTENED RECORD MEMBER.
References Cited (Backward Citations)
GB316784A
Cited
US1975409A
Cited
US2433632A
Cited
US2435700A
Cited
US2378305A
Cited
US2453481A
Cited
US2442596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |