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US3422036A
Expired / Lapsed
US
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Catalysis of the active hydrogen-isocyanate reaction
Assignee: Bayer AG
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Filing: 1965-04-19
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Granted: 1969-01-14
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Expires: 1985-04-19
Abstract
No abstract record available.
Inventors
- 👤 Konrad Ellegast
- 👤 Gerd Reinecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/22; C08G18/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA631047A
Cited
US2634244A
Cited
US2772245A
Cited
GB770526A
Cited
US3108975A
Cited
US3028345A
Cited
US3112320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |