US3489744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of diisocyanate dimers in aqueous medium
Assignee: Uniroyal Chemical Co Inc
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Filing: 1966-07-18
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Granted: 1970-01-13
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Expires: 1986-07-18
Abstract
No abstract record available.
Inventors
- 👤 Andor Schwarcz
- 👤 Gordon D Brindell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:53
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/798; C07; C07D; C07D229/00; C08G18/28; C08G18/40; C08G18/60; C08G18/603
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2683144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |