Patent US3536520A successfully refreshed from Google Patents.
US3536520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel coated flake pigments and methods for their preparation
Assignee: EIDP Inc
•
Filing: 1967-04-17
•
Granted: 1970-10-27
•
Expires: 1987-04-17
Abstract
No abstract record available.
Inventors
- 👤 William J Marshall
- 👤 Albert R Hanke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:23
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/0078; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84; C01P2004/88
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2266117A
Cited
US2487632A
Cited
US2702253A
Cited
US2872312A
Cited
US3053683A
Cited
US3071482A
Cited
US3087828A
Cited
US3212917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |