US2861515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making duplicating master
Assignee: Timefax Corp
•
Filing: 1955-02-02
•
Granted: 1958-11-25
•
Expires: 1975-02-02
Abstract
No abstract record available.
Inventors
- 👤 Harold R Dalton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:50
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/025; B41M5/04; B41M5/24; B41M5/245; B41N; B41N1/00; B41N1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD OF MAKING A DUPLICATING MASTER WHICH COMPRISES APPLYING TO A BACKING AN ELECTRICALLY CONDUCTIVE COATING IN THE FORM OF A MIXTURE FORMED FROM A DRIED SOLUTION CONTAINING A WATER SOLUBLE AND ALCOHOL SOLUBLE WAXLIKE INGREDIENT HAVING SUBSTANTIAL FLOWABILITY AT TEMPERATURES BETWEEN 75*C. AND 100*C., POWDERED CARBON, AND A DYE, APPLYING ANOTHER COATING WHICH IS DYE-FREE OVER THE FIRST MENTIONED COATING, APPLYING A POINT ELECTRIC DISCHARGE IN SELECTED AREAS TO FORM CAPILLARY RECESSES IN SAID DYE-FREE COATING, AND THEN HEATING THE BLANK TO MELT THE WAXLIKE INGREDIENT IN SAID DYE-CONTAINING COATING TO FACILITATE THE PASSAGE OF DYE THROUGH SAID RECESSES IN SAID DYE-FREE COATING TO THE SURFACE OF THE BLANK OR ON TO A RECEIVING SURFACE IN CONTACT WITH THE BLANK.
Claim 2
Independent Claim
122 words
THE METHOD OF MAKING A DUPLICATING MASTER WHICH COMPRISES APPLYING TO A BACKING AN ELECTRICALLY CONDUCTIVE COATING IN THE FORM OF A MIXTURE FORMED FROM A DRIED SOLUTION CONTAINING A WATER SOLUBLE AND ALCOHOL SOLUBLE WAXLIKE INGREDIENT HAVING SUBSTANTIAL FLOWABILITY AT TEMPERATURES BETWEEN 75*C. AND 100*C., POWDERED CARBON, AND A DYE, APPLYING ANOTHER COATING WHICH IS DYE-FREE OVER THE FIRST MENTIONED COATING, APPLYING A POINT ELECTRIC DISCHARGE IN SELECTED AREAS TO FORM CAPILLARY RECESSES IN SAID DYE-FREE COATING, AND THEN HEATING THE BLANK TO MELT THE WAXLIKE INGREDIENT IN SAID DYE-CONTAINING COATING TO FACILITATE THE PASSAGE OF DYE THROUGH SAID RECESSES IN SAID DYE-FREE COATING TO THE SURFACE OF THE BLANK OR ON TO A RECEIVING SURFACE IN CONTACT WITH THE BLANK.
References Cited (Backward Citations)
US2166992A
Cited
US2398779A
Cited
US2638422A
Cited
US2501495A
Cited
US2554909A
Cited
US2664043A
Cited
US2664044A
Cited
US2593923A
Cited
US2634677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |