Patent US4320459A successfully refreshed from Google Patents.
Patent US3689301A successfully refreshed from Google Patents.
US3689301A
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Transfer elements and process for preparing same
Assignee: Columbia Ribbon and Carbon Manufacturing Co Inc
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Filing: 1970-12-30
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Granted: 1972-09-05
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Expires: 1990-12-30
Abstract
Abstract METHOD OF PRODUCING NOVEL PRESSURE-SENSITIVE TRANSFER ELEMENTS HAVING A POLYOLEFIN FILM FOUNDATION, PREFERABLY POLYPROPYLENE, AND A SOLVENT-APPLIED NON-TRANSFERABLE RESINOUS INK LAYER WHICH EXUDES INK TO A COPY SHEET UNDER IMAGING PRESSURE. THE RESINOUS INK LAYER IS BONDED TO THE FOUNDATION BY MEANS OF A BONDING LAYER COMPRISING A MIXTURE OF A MAJOR AMOUNT BY WEIGHT OF A CURED POLYURETHANE POLYMER WHICH IS INSOLUBLE IN THE SOLVENT OF THE INK LAYER AND A MINOR AMOUNT BY WEIGHT OF A SYNTHETIC THERMOPLASTIC POLYMER WHICH IS SOLUBLE IN SAID SOLVENT.
Inventors
- 👤 Michael A Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:41
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/10; C; C08; C08L; C08L75/00; C08L75/04; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249994; Y10T428/249995; Y10T428/249996; Y10T428/31; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/3158; Y10T428/31587
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |