Patent US3376154A successfully refreshed from Google Patents.
US3376154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon paper and method for the manufacture thereof
Assignee: Moore Business Forms Inc
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Filing: 1963-09-17
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Granted: 1968-04-02
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Expires: 1983-09-17
Abstract
No abstract record available.
Inventors
- 👤 Campbell John
- 👤 William E Beazley
- 👤 Donald R Benn
- 👤 Milton J Grandin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:05
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/08; D21H25/10; B; B41; B41M; B41M5/00; B41M5/10; D21H5/00; D21H5/0005; D21H5/006; D21H5/0062; D21H5/0065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN A PROCESS FOR THE MANUFACTURE OF CARBON PAPER HAVING A CARBON INK COATING ON A TISSUE PAPER SUPPORT, THE IMPROVEMENT OF PREPARING SAID TISSUE PAPER HAVING PINHOLES THEREIN FOR RECEPTION OF SAID COATING COMPRISING THE STEPS OF APPLYING A COMPOSITION COMPRISING AT LEAST ONE THERMOPLASTIC RESIN AND A VOLATILE SOLVENT TO THE UNDERSIDE SURFACE OF A SUBSTANTIALLY HORIZONTAL CONTINUOUSLY MOVING WEB OF SAID TISSUE PAPER MAINTAINED UNDER TENSION, SAID COMPOSITION HAVING A VISCOSITY BETWEEN 40 AND 50 CENTIPOISES AT 24*C., FILLING SAID PINHOLES AND SIMULTANEOUSLY REMOVING SAID COMPOSITION FROM SAID UNDERSIDE SURFACE OF SAID WEB BY PASSING SAID WEB ACROSS THE SHARP EDGE OF A BLADE AT AN ANGLE OF BETWEEN 75 AND 110* WITH RESPECT TO THE ONCOMING WEB OF TISSUE PAPER, SUCH THAT SAID COMPOSITION DOES NOT SPRAY THROUGH THE PORES OF SAID PAPER AND, DRYING SAID WEB, WHEREBY SAID PINHOLES ARE FILLED WITH SAID RESIN.
Claim 2
Dependent Claim
149 words
IN A PROCESS FOR THE MANUFACTURE OF CARBON PAPER HAVING A CARBON INK COATING ON A TISSUE PAPER SUPPORT, THE IMPROVEMENT OF PREPARING SAID TISSUE PAPER HAVING PINHOLES THEREIN FOR RECEPTION OF SAID COATING COMPRISING THE STEPS OF APPLYING A COMPOSITION COMPRISING AT LEAST ONE THERMOPLASTIC RESIN AND A VOLATILE SOLVENT TO THE UNDERSIDE SURFACE OF A SUBSTANTIALLY HORIZONTAL CONTINUOUSLY MOVING WEB OF SAID TISSUE PAPER MAINTAINED UNDER TENSION, SAID COMPOSITION HAVING A VISCOSITY BETWEEN 40 AND 50 CENTIPOISES AT 24*C., FILLING SAID PINHOLES AND SIMULTANEOUSLY REMOVING SAID COMPOSITION FROM SAID UNDERSIDE SURFACE OF SAID WEB BY PASSING SAID WEB ACROSS THE SHARP EDGE OF A BLADE AT AN ANGLE OF BETWEEN 75 AND 110* WITH RESPECT TO THE ONCOMING WEB OF TISSUE PAPER, SUCH THAT SAID COMPOSITION DOES NOT SPRAY THROUGH THE PORES OF SAID PAPER AND, DRYING SAID WEB, WHEREBY SAID PINHOLES ARE FILLED WITH SAID 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) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |