US3682680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clay-coated sheet for pressure-sensitive copying sheet
Assignee: Fujifilm Holdings Corp
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Filing: 1970-05-12
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Granted: 1972-08-08
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Expires: 1990-05-12
Abstract
Abstract A CLAY-COATEND SHEET FOR USE IN A PRESSURE-SENSITIVE COPYING SHEET COMPRISING A SUPPORT HAVING COATED THEREON A CLAY LAYER CONTAINING AN ALKALI METAL SALT OF AN ORGANIC ACID.
Inventors
- 👤 Takao Hayashi
- 👤 Hiroharu Matsukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:33
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31765; Y10T428/31768; Y10T428/31772; Y10T428/31775; Y10T428/31855; Y10T428/3188; Y10T428/31895
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |