US3459789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethane methylol ethers containing hydroxyl groups
Assignee: Bayer AG
•
Filing: 1966-04-19
•
Granted: 1969-08-05
•
Expires: 1986-04-19
Abstract
No abstract record available.
Inventors
- 👤 Erwin Muller
- 👤 Dieter Dieterich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:43
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/425; C; C07; C07C; C07C271/00; C07C271/06; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08L; C08L75/00; C08L75/04; D06M13/10; D06M13/165; D06M13/432
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA559551A
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CA610393A
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US2184008A
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FR1030430A
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US2703810A
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US2928812A
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US2755286A
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US3087965A
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US3226428A
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US3357932A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |