Patent US3421931A successfully refreshed from Google Patents.
US3421931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating of pulverulent materials
Assignee: Rhodiaceta SA
•
Filing: 1965-08-02
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Granted: 1969-01-14
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Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Auguste Reverand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:50
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/10; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B45/18; C08; C08K; C08K9/00; C08K9/10; C09D; C09D177/00; C01; C01P; C01P2004/00; C01P2004/51; C08L; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2402021A
Cited
US2916996A
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US2943926A
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US3091596A
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US3173817A
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US3272897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |