US3336150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive copying sheet and method of making
Assignee: Pairotto MAN-Nen-Hitsu KK
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Filing: 1963-09-05
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Granted: 1967-08-15
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Expires: 1983-09-05
Abstract
No abstract record available.
Inventors
- 👤 Takahashi Ichiro
- 👤 Watanabe Akio
- 👤 Wada Natsuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:05
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/10; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249994; Y10T428/249995; Y10T428/249996
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PRESSURE-SENSITIVE COPYING MATERIAL WHICH COMPRISES A FLEXIBLE BASE SHEET, RESIN LAYER HAVING A SPONGY, POROUS STRUCTURE BOUND TO SAID BASE SHEET, AND A MIXTURE OF COLORING MATTER IN A LIQUID, NON-VOLATILE PARTIAL ESTER OF A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCERINE, ERYTHRITOL, PENTAERYTHRITOL, SORBITOL AND SORBITAN, SAID PARTIAL ESTER BEING IMMISCIBLE WITH SAID RESIN, HAVING AT LEAST ONE LONG CHAIN, ALIPHATIC ACID ESTER GROUP OF AT LEAST 10 CARBON ATOMS AND HAVING AT LEAST ONE FREE HYDROXYL GROUP, SAID MIXTURE BEING UNFORMLY DISPERSED IN SAID RESIN LAYER.
Claim 2
Dependent Claim
91 words
A PRESSURE-SENSITIVE COPYING MATERIAL WHICH COMPRISES A FLEXIBLE BASE SHEET, RESIN LAYER HAVING A SPONGY, POROUS STRUCTURE BOUND TO SAID BASE SHEET, AND A MIXTURE OF COLORING MATTER IN A LIQUID, NON-VOLATILE PARTIAL ESTER OF A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCERINE, ERYTHRITOL, PENTAERYTHRITOL, SORBITOL AND SORBITAN, SAID PARTIAL ESTER BEING IMMISCIBLE WITH SAID RESIN, HAVING AT LEAST ONE LONG CHAIN, ALIPHATIC ACID ESTER GROUP OF AT LEAST 10 CARBON ATOMS AND HAVING AT LEAST ONE FREE HYDROXYL GROUP, SAID MIXTURE BEING UNFORMLY DISPERSED IN SAID RESIN LAYER.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |