US3847265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink ribbon having an anisotropic electric conductivity
Assignee: Battelle Memorial Institute Inc
•
Filing: 1973-04-25
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Granted: 1974-11-12
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Expires: 1993-04-25
Abstract
Abstract Polymeric ribbon having a plurality of chains of magnetized ferromagnetic conductive particles extending through the ribbon to yield an ink ribbon having an anisotropic electrical conductivity extending in the direction of the thickness of the ribbon.
Inventors
- 👤 J Ehretsmann
- 👤 E Barbey
- 👤 P Heinzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:26
CPC Classifications
H; H01; H01B; H01B5/00; H01B5/16; H01B1/00; H01B1/20; H01B1/22; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/26; Y10T428/268
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
46 words
An ink ribbon having an anisotropic electric conductivity in the direction of the thickness of the ribbon, characterized in that said ribbon is formed of a resin containing a plurality of chains of electrically conductive particles extending through the ribbon in the direction of said thickness.
Claim 2
Dependent Claim
46 words
An ink ribbon having an anisotropic electric conductivity in the direction of the thickness of the ribbon, characterized in that said ribbon is formed of a resin containing a plurality of chains of electrically conductive particles extending through the ribbon in the direction of said thickness.
Claim 3
Dependent Claim
19 words
An ink ribbon as claimed in claim 1, characterized in that said electrically conductive particles comprise a ferromagnetic metal.
Claim 4
Dependent Claim
24 words
An ink ribbon as claimed in claim 1, characterized in that said electrically conductive particles have a diameter between 2 and 50 Mu .
Claim 5
Dependent Claim
17 words
An ink ribbon as claimed in claim 1, characterized in that said resin is a polyester polymer.
Claim 6
Dependent Claim
17 words
An ink ribbon as claimed in claim 1, characterized in that said resin is a thermo-setting resin.
Claim 7
Dependent Claim
17 words
An ink ribbon as claimed in claim 1, characterized in that said resin is a thermoplastic resin.
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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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |