US3746566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mat film for writing
Assignee: Fujifilm Holdings Corp
•
Filing: 1971-07-02
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Granted: 1973-07-17
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Expires: 1991-07-02
Abstract
Abstract A MAT LAYER COMPRISING A FINE POWDER OF FUSED ALUMINA AND CELLULOSE ACETATE RESIN ON A PLASTIC FILM IS EXCELLENT IN WRITING AND ERASING PROPERTIES.
Inventors
- 👤 N Hiratsuka
- 👤 T Iwamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:15
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/18; B05; B05D; B05D5/00; B05D5/04; B05D7/00; B05D7/02; B05D7/04; B05D5/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24413; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/31504; Y10T428/31507; Y10T428/31786; Y10T428/3179; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891; Y10T428/31935
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |