US3205998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inked ribbon for typewriters and other business machines
Assignee: Individual
•
Filing: 1962-11-19
•
Granted: 1965-09-14
•
Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 Robert J Sperry
- 👤 Jr Nelson B Vanderhoof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:50
CPC Classifications
B; B41; B41J; B41J31/00; B41J31/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
AN IMPROVED TYPEWRITER RIBBON COMPRISING A LENGTH OF RIBBON FABRIC HAVING A PROTECT IVE COATING OF A VINYL COMPOUND APPLIED AT ONE SIDE OF THE RIBBON TO PROVIDE A REINFORCED TYPE RECEIVING SURFACE, PORTIONS OF THE COATING MATERIAL AT THE SAID TYPE RECEIVING SURFACE BEING RELATIVELY HEAVILY IMPREGNATED THEREIN, OTHER PORTIONS OF THE COATING MATERIAL BEING RELATIVELY LIGHTLY IMPREGNATED THROUGH THE RIBBON FABRIC TO THE OPPOSITE SIDE THEREOF TO OVERLIE CONSTITUENT FABRIC YARNS IN THE FORM OF THIN OUT ER FILMS, A TYPEWRITER RIBBON INK APPLIED TO THE RIBBON FABRIC YARNS OVER THE SAID THIN OUTER FILMS OF PROTECTIVE COATING MATERIAL TO PROVIDE AN INKING SURFACE, SAID INK CONSISTING OF A GREASY MINERAL OIL AND CARBON BLACK MASS IN WHICH
Claim 2
Dependent Claim
120 words
AN IMPROVED TYPEWRITER RIBBON COMPRISING A LENGTH OF RIBBON FABRIC HAVING A PROTECT IVE COATING OF A VINYL COMPOUND APPLIED AT ONE SIDE OF THE RIBBON TO PROVIDE A REINFORCED TYPE RECEIVING SURFACE, PORTIONS OF THE COATING MATERIAL AT THE SAID TYPE RECEIVING SURFACE BEING RELATIVELY HEAVILY IMPREGNATED THEREIN, OTHER PORTIONS OF THE COATING MATERIAL BEING RELATIVELY LIGHTLY IMPREGNATED THROUGH THE RIBBON FABRIC TO THE OPPOSITE SIDE THEREOF TO OVERLIE CONSTITUENT FABRIC YARNS IN THE FORM OF THIN OUT ER FILMS, A TYPEWRITER RIBBON INK APPLIED TO THE RIBBON FABRIC YARNS OVER THE SAID THIN OUTER FILMS OF PROTECTIVE COATING MATERIAL TO PROVIDE AN INKING SURFACE, SAID INK CONSISTING OF A GREASY MINERAL OIL AND CARBON BLACK MASS IN WHICH
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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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |