Patent US3825470A successfully refreshed from Google Patents.
US3825470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesively eradicable transfer medium
Assignee: International Business Machines Corp
•
Filing: 1972-08-03
•
Granted: 1974-07-23
•
Expires: 1992-08-03
Abstract
Abstract A TRANSFER MEDIUM OR TYPEWRITER RIBBON IS DISCLOSED, WHICH IS CAPABLE OF BEING UTILIZED TO IMPRINT A LETTER AND IF THE LETTER IS ERRONEOUS, WHICH IS SUSCEPTIBLE OF ADHESIVE REMOVAL. THE RIBBON IS MADE OF A HARD, FILM FORMING RESIN WITH SELECTIVE MODIFICATION OF ITS PROPERTIES THROUGH THE ADDITION OF ADDITIVES WHICH EMBRITTLE THE FILM AND MAKE THE RESIN MORE ADHERRENT FOR THE IMAGING SURFACE WHILE NOT PENETTRATING INTO THE FIBERS OF THE PAPER IMAING SURFACE, AND ATTACHING ITSELF. AS TIME PASSES THERE IS AN INCREASED ATTACHMENT TO THE PAPER FIBERS THEREBY RENDERING A MORE PERMANENT IMAGE.
Inventors
- 👤 D Elbert
- 👤 G Waldrip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:14
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/10; B41J; B41J29/00; B41J29/26; B41J29/36; B41J29/373; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31844; Y10T428/31855; Y10T428/31938
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |