US2912344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive transfer element for placing smudge-resistant marks
Assignee: Columbia Ribbon and Carbon Manufacturing Co Inc
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Filing: 1957-10-11
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Granted: 1959-11-10
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Expires: 1977-10-11
Abstract
No abstract record available.
Inventors
- 👤 Douglas A Newman
- 👤 Harold F E Dixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:47
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/16; B; B41; B41M; B41M5/00; B41M5/10; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/24983; Y10T428/28; Y10T428/2848; Y10T428/31504; Y10T428/31801; Y10T428/31804
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
AS A NEW ARTICLE OF MANUFACTURE, A PRESSURE-SENSITIVE TRANSFER ELEMENT OF THE CARBON PAPER TYPE COMPRISING A FLEXIBLE FOUNDATION SHEET HAVING THEREON TWO MUTUALLY ADHERING LAYERS WHICH ARE SIMULTANEOUSLY LOCALLY TRANSFERABLE FROM THE FOUNDATION TO A COPY SHEET IN A SUBSTANTIALLY STENCILING MANNER IN RESPONSES TO A BLOW OR PRESSURE, THE BASE LAYER ADJACENT THE SURFACE OF THE SHEET BEING UNPIGMENTED AND HAVING READILLY RELEASABLE CONTACT THEREWITH AND BEING OF SMUDGE RESISTANT CHARACTER, AND AT LEAST THE LAYER REMOTE FROM THE SURFACE OF THE SHEET BEING CHARGED WITH PIGMENT DESIGNED FOR AUTOMATIC SENSING.
Claim 2
Dependent Claim
93 words
AS A NEW ARTICLE OF MANUFACTURE, A PRESSURE-SENSITIVE TRANSFER ELEMENT OF THE CARBON PAPER TYPE COMPRISING A FLEXIBLE FOUNDATION SHEET HAVING THEREON TWO MUTUALLY ADHERING LAYERS WHICH ARE SIMULTANEOUSLY LOCALLY TRANSFERABLE FROM THE FOUNDATION TO A COPY SHEET IN A SUBSTANTIALLY STENCILING MANNER IN RESPONSES TO A BLOW OR PRESSURE, THE BASE LAYER ADJACENT THE SURFACE OF THE SHEET BEING UNPIGMENTED AND HAVING READILLY RELEASABLE CONTACT THEREWITH AND BEING OF SMUDGE RESISTANT CHARACTER, AND AT LEAST THE LAYER REMOTE FROM THE SURFACE OF THE SHEET BEING CHARGED WITH PIGMENT DESIGNED FOR AUTOMATIC SENSING.
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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |