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Patent US3470007A successfully refreshed from Google Patents.
US3470007A
Expired / Lapsed
US
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Stabilized lead chromate pigments and process for making same
Assignee: EIDP Inc
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Filing: 1967-11-08
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Granted: 1969-09-30
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Expires: 1987-11-08
Abstract
No abstract record available.
Inventors
- 👤 Howard R Linton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:49
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/14; C09C1/20; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84; C01P2004/88
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2113539A
Cited
US2237104A
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US2296638A
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US2885366A
Cited
US3025179A
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US2987412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |