Patent US3506630A successfully refreshed from Google Patents.
US3506630A
Expired / Lapsed
US
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Ethylene-vinyl acetate copolymer prepared in the presence of minor amounts of butyraldehyde
Assignee: Wacker Chemie AG
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Filing: 1968-12-30
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Granted: 1970-04-14
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Expires: 1988-12-30
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Beier
- 👤 Eduard Bergmeister
- 👤 Hubert Wiest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:58
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/08; C08; C08F; C08F10/00; C08F218/00; C08F218/02; C08F218/04; C08F218/08; Y; Y10; Y10S; Y10S526/00; Y10S526/915
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) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |