US2830689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-use typewriter ribbons
Assignee: Arthur D Little Inc
•
Filing: 1956-09-06
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Granted: 1958-04-15
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Expires: 1976-09-06
Abstract
No abstract record available.
Inventors
- 👤 John J Clancy
- 👤 Alton B Poole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:48
CPC Classifications
B; B41; B41J; B41J31/00; B41J31/05; B41J31/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A ONE-USE TYPEWRITER RIBBON COMPRISING A BACKING AND A COATING OF INK THEREON, SAID BACKING BEING A THIN POLYETHYLENE FILM HAVING A THICKNESS OF ABOUT 1/2 TO 3 MILS, SAID POLYETHYLENE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 17,000, SAID FILM HAVING SIGNIFICANT ORIENTATION IN BOTH DIRECTIONS, SAID INK BEING OF SOLID CONSISTENCY AND CAPABLE OF BEING TRANSFERRED AT NORMAL ROOM TEMPERATURE TO COPY PEPER BY THE IMPACT OF THE TYPE FACES OF THE TYPEWRITER.
Claim 2
Dependent Claim
76 words
A ONE-USE TYPEWRITER RIBBON COMPRISING A BACKING AND A COATING OF INK THEREON, SAID BACKING BEING A THIN POLYETHYLENE FILM HAVING A THICKNESS OF ABOUT 1/2 TO 3 MILS, SAID POLYETHYLENE HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 17,000, SAID FILM HAVING SIGNIFICANT ORIENTATION IN BOTH DIRECTIONS, SAID INK BEING OF SOLID CONSISTENCY AND CAPABLE OF BEING TRANSFERRED AT NORMAL ROOM TEMPERATURE TO COPY PEPER BY THE IMPACT OF THE TYPE FACES OF THE TYPEWRITER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |