US2786807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry electrical recording medium
Assignee: Faximile Inc
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Filing: 1953-05-18
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Granted: 1957-03-26
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Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Robert S Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:48
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/20; B41M5/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A DRY WHITE RECORDING MEDIUM WHICH IS INITIALLY SUBSTANTIALLY NON-CONDUCTIVE ELECTRICALLY, COMPRISING A SINGLE LAYER POROUS MEMBER IMPREGNATED WITH AN ELECTRORESPONSIVE SUBSTANTIALLY COLORLESS MARKING COMPOUND, A HIGHLY IONIZABLE SALT, AND A MAJOR QUANTITY OF AN ACETAMIDE DERIVATIVE HAVING THE FORM CH(3-N)XNCONH2, WHERE X IS A SUBSTITUTION GROUP, AND N IS AN INTEGER FROM 1 THROUGH 3 INCLUSIVE, THE ACETAMIDE DERIVATIVE BEING SELECTED FROM THE GROUP CONSISTING OF CYANO-, FLUORO-, CHLORO- BROMO, IODO-, AND HYDROXY ACETAMIDES, SAID MEDIUM BEING RENDERED ELECTROCONDUCTIVE AND ELECTRICALLY MARKABLE WHEN THE IMPREGNANT IS HEATED TO THE MELTING POINT THEREOF.
Claim 2
Dependent Claim
93 words
A DRY WHITE RECORDING MEDIUM WHICH IS INITIALLY SUBSTANTIALLY NON-CONDUCTIVE ELECTRICALLY, COMPRISING A SINGLE LAYER POROUS MEMBER IMPREGNATED WITH AN ELECTRORESPONSIVE SUBSTANTIALLY COLORLESS MARKING COMPOUND, A HIGHLY IONIZABLE SALT, AND A MAJOR QUANTITY OF AN ACETAMIDE DERIVATIVE HAVING THE FORM CH(3-N)XNCONH2, WHERE X IS A SUBSTITUTION GROUP, AND N IS AN INTEGER FROM 1 THROUGH 3 INCLUSIVE, THE ACETAMIDE DERIVATIVE BEING SELECTED FROM THE GROUP CONSISTING OF CYANO-, FLUORO-, CHLORO- BROMO, IODO-, AND HYDROXY ACETAMIDES, SAID MEDIUM BEING RENDERED ELECTROCONDUCTIVE AND ELECTRICALLY MARKABLE WHEN THE IMPREGNANT IS HEATED TO THE MELTING POINT THEREOF.
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) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |