US3535139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive copying papers
Assignee: Pilot Corp
•
Filing: 1967-11-14
•
Granted: 1970-10-20
•
Expires: 1987-11-14
Abstract
No abstract record available.
Inventors
- 👤 Akio Watanabe
- 👤 Masayoshi Imai
- 👤 Yasuzo Murata
- 👤 Hiroshi Hyodo
- 👤 Takayuki Maruya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:31
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/136; B41M5/1363; B41M5/155; 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)
US3223546A
Cited
US3389007A
Cited
US3287154A
Cited
US3432327A
Cited
US3451338A
Cited
US3455721A
Cited
US3447945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |