Patent US4936848A successfully refreshed from Google Patents.
US2944037A
Expired / Lapsed
US
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Ink-transfer compositions and duplicating media prepared therewith
Assignee: Unisys Corp
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Filing: 1956-07-19
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Granted: 1960-07-05
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Expires: 1976-07-19
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:52
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/106; C09D11/107; B; B41; B41M; B41M5/00; B41M5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN AN INK-TRANSFER COMPOSITION COMPRISING A UNIFORM MIXTURE OF A SOLID SYNTHETIC RESIN COMPRISING A VINYL CHLORIDE RESIN, A NON-VOLATILE, NON-DRYING LIQUID SUFFICIENTLY INCOMPATIBLE WITH THE RESIN AND PRESENT IN SUFFICIENT QUALITY TO MIGRATE WITHIN THE RESIN AND TO BE EXPRESSIBLE THEREFROM UNDER PRESSURE, AND COLORING MATTER, WHICH COMPOSITION IS OPERATIVE TO TRANSFER INK WHEN SUBJEATED TO PRESSURE BY THE EXPRESSION FROM THE RESIN OF THE NON-VOLATILE, NON-DRYING LIQUID CARRING THE COLORING MATTER, THE IMPROVEMENT WHEREIN SAID SOLID SYNTHETIC RESIN ALSO INCLUDES AN ACRYLIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYMERIZED ACRYLIC AND METHACRYLIC ESTERS OF LOWER ALIPHATIC ALCOHOLS.
Claim 2
Dependent Claim
100 words
IN AN INK-TRANSFER COMPOSITION COMPRISING A UNIFORM MIXTURE OF A SOLID SYNTHETIC RESIN COMPRISING A VINYL CHLORIDE RESIN, A NON-VOLATILE, NON-DRYING LIQUID SUFFICIENTLY INCOMPATIBLE WITH THE RESIN AND PRESENT IN SUFFICIENT QUALITY TO MIGRATE WITHIN THE RESIN AND TO BE EXPRESSIBLE THEREFROM UNDER PRESSURE, AND COLORING MATTER, WHICH COMPOSITION IS OPERATIVE TO TRANSFER INK WHEN SUBJEATED TO PRESSURE BY THE EXPRESSION FROM THE RESIN OF THE NON-VOLATILE, NON-DRYING LIQUID CARRING THE COLORING MATTER, THE IMPROVEMENT WHEREIN SAID SOLID SYNTHETIC RESIN ALSO INCLUDES AN ACRYLIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYMERIZED ACRYLIC AND METHACRYLIC ESTERS OF LOWER ALIPHATIC ALCOHOLS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |