US3686015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive record system
Assignee: US Plywood Champion Papers Inc
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Filing: 1970-07-17
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Granted: 1972-08-22
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Expires: 1990-07-17
Abstract
Abstract A DRY, PRESSURE-SENSITIVE COPY SYSTEM IS PROVIDED BY COATING DISCRETE, SUBSTANTIALLY SPHERICAL AIR-CONTAINING MICROCAPSULAR OPACIFYING AGENTS HAVING CONTROLLED STRUCTURAL INTEGRITY ONTO A COLORED SURFACE. LOCALIZED APPLICATION OF PRESSURE TO THE COATING CAUSES DESTRUCTION OF THE OPACITY ING AGENTS AND EXPOSES THE UNDERLYING COLORED SURFACE AT THE POINTS OF PRESSURE APPLICATION THEREBY PRODUCING AN IMAGE.
Inventors
- 👤 Mabrin P Powell
- 👤 Mark R Nauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:43
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/165; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2985; Y10T428/2987
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |