Patent US3494731A successfully refreshed from Google Patents.
US3494731A
Expired / Lapsed
US
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Pigment and method of preparing the same
Assignee: Individual
•
Filing: 1967-12-26
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Granted: 1970-02-10
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Expires: 1987-12-26
Abstract
No abstract record available.
Inventors
- 👤 Howard H Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:56
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/40; C09C1/402; B; B82; B82Y; B82Y30/00; C01; C01F; C01F7/00; C01F7/02; C01F7/16; C01F7/164; C01P; C01P2004/00; C01P2004/60; C01P2004/62; C01P2004/64; C01P2004/80; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2248032A
Cited
US2312918A
Cited
US2413184A
Cited
DE856840C
Cited
US2947643A
Cited
US3148998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |