US3409487A
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US
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Use of a phenolic resin and ethylene oxide polymer as an etching resist
Assignee: Union Carbide Corp
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Filing: 1964-11-09
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Granted: 1968-11-05
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 John S Fry
- 👤 Dale F Pollart
- 👤 Julius L Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:15
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/02; H05K3/06; H05K3/061; C; C03; C03C; C03C15/00; C08; C08L; C08L61/00; C08L61/04; C08L61/06; C08L71/00; C08L71/02; C23; C23F; C23F1/00; C23F1/02; C25; C25F; C25F3/00; C25F3/02; C25F3/14; G; G03; G03F; G03F7/00; G03F7/004; G03F7/016; G03F7/021; G03F7/0212; G03F7/038; G03F7/0381; H10; H10N; H10N97/00; H10P; H10P50/00; H10P50/20; H10P50/28; H10P50/282; H10P50/283; H10P50/60; H10P50/61; H10P50/613; H10P50/66; H10P50/663; H10P50/667; H10P50/69; H10P50/691; H10P50/692; H10P50/73; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0116; H05K3/0073; H05K3/0076
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) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |