US1255807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium compounds.
Assignee: Co Of Peter Spence & Sons Ltd
•
Filing: 1914-12-11
•
Granted: 1918-02-05
•
Expires: 1934-12-11
Abstract
No abstract record available.
Inventors
- 👤 Howard Spence
- 👤 Herbert Wrigley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:36
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/003
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1921-02-04 | 1921-08-06 | 1922-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-02-04 | 1925-08-06 | 1926-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-02-04 | 1929-08-06 | 1930-02-05 | $7700.00 | Window Closed / Lapsed |