US3825467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive record sheet material
Assignee: WTA Inc
•
Filing: 1972-01-24
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Granted: 1974-07-23
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Expires: 1992-01-24
Abstract
Abstract A PRESSURE-RESPONSIVE RECORD SHEET MATERIAL INCLUDING A SUBSTRATE SHEET WITH A COATING OF PRESSURE-RELEASABLE LIQUID DROPLETS OF MARKING MATERIAL ISOLATED BY POLYMERIC FILM MATERIAL AND RELEASABLE BY MARKING PRESSURES, WHEREIN SAID DROPLETS ARE PROTECTED FROM ACCIDENTAL RELEASE, AS BY SCUFFING AND RROLLING PRESSURES, BY AN OVER-SHEET OF THIN, POROUS PAPER BONDED ADHESIVELY TO SAID COATING.
Inventors
- 👤 P Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:20
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/1246; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249963; Y10T428/249994; Y10T428/249995; Y10T428/249997; Y10T428/26; Y10T428/27
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |