US2479836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finishing of pigments
Assignee: Wyeth Holdings LLC
•
Filing: 1947-08-07
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Granted: 1949-08-23
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Expires: 1967-08-07
Abstract
No abstract record available.
Inventors
- 👤 Waller H Hoback
- 👤 Winfred J Cauwenberg
- 👤 Walter R Whately
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:16
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3676; C09C3/00; C09C3/10; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/62; C01P2004/80; C01P2006/00; C01P2006/60; C01P2006/90
Claims Analysis
Total Claims: 0
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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) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |