Patent EP0616236A1 successfully refreshed from Google Patents.
US3517039A
Expired / Lapsed
US
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Process for preparing acylated urea diisocyanates
Assignee: Bayer AG
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Filing: 1966-05-23
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Granted: 1970-06-23
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Expires: 1986-05-23
Abstract
No abstract record available.
Inventors
- 👤 Kuno Wagner
- 👤 Ernst Meisert
- 👤 Gerhard Mennicken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:37
CPC Classifications
C; C07; C07C; C07C327/00; C07C327/38; C07C327/40; C07C275/00; C07C275/46; C07C275/58; C07C275/60; C07C275/62; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/7806; C08G18/7818
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3350438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |