US2453490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing a barium lake pigment
Assignee: EIDP Inc
•
Filing: 1946-05-23
•
Granted: 1948-11-09
•
Expires: 1966-05-23
Abstract
No abstract record available.
Inventors
- 👤 Callaway Jack Beniah
- 👤 Killian Donald Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:38
CPC Classifications
C; C09; C09B; C09B63/00; C09B63/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US309882A
Cited
USRE18590E
Cited
GB190223831A
Cited
US733280A
Cited
US759716A
Cited
DE565266C
Cited
US2013091A
Cited
US2229049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |