US3131088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing surface coatings
Assignee: Evonik Operations GmbH
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Filing: 1961-10-23
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Granted: 1964-04-28
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Expires: 1981-10-23
Abstract
No abstract record available.
Inventors
- 👤 Festag Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:18
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/18; D21H27/22; D21H27/26; B; B32; B32B; B32B27/00; C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C08F18/08; C09; C09D; C09D131/00; C09D131/06; C09D131/08; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/37; D06M15/507; D06M15/51; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/36; Y; Y10; Y10T; Y10T156/00; Y10T156/10
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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |