Patent US3542571A successfully refreshed from Google Patents.
US3542571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing ferric titanate
Assignee: OI Glass Inc
•
Filing: 1968-11-12
•
Granted: 1970-11-24
•
Expires: 1988-11-12
Abstract
No abstract record available.
Inventors
- 👤 William E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:08
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/025; C; C01; C01G; C01G49/00; C01G49/0018; C30; C30B; C30B1/00; C30B1/02; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B29/32; C01P; C01P2004/00; C01P2004/60; C01P2004/61
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3393448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |