Patent US3516845A successfully refreshed from Google Patents.
US3516845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record sheet sensitized with salt modified kaolin-phenolic material
Assignee: Appvion LLC
•
Filing: 1967-01-24
•
Granted: 1970-06-23
•
Expires: 1987-01-24
Abstract
No abstract record available.
Inventors
- 👤 Bruce W Brockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:30
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/56; D21H19/60; D21H19/62; D21H19/64
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |