US3080368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Masked isocyanates
Assignee: Bayer AG
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Filing: 1959-05-29
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Granted: 1963-03-05
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Expires: 1979-05-29
Abstract
No abstract record available.
Inventors
- 👤 Wegler Richard
- 👤 Kuhle Engelbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:05
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/71; C08G18/714; C07; C07C; C07C263/00; C07C263/10; C07C265/00; C07C265/12; C07C265/14; C08G18/28; C08G18/40; C08G18/42; C08G18/4205; C08G18/4208; C08G18/4222; C08G18/72; C08G18/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A COMPOUND CAPABLE OF ISOCYANATE REACTION AT TEMPERATURES WITHIN THE RANGE OF FROM ABOUT 130*C. TO ABOUT 220*C. WHICH IS PREPARED BY A PROCESS WHICH COMPRISES REACTING AN AROMATIC PRIMARY AMINE HAVING A TERTIARY CARBONAMIDE GROUP IN THE ORTHO POSITION WITH RESPECT TO AN AMINO GROUP AND PHOSGENE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 10*C. TO ABOUT 150*C.
Claim 2
Dependent Claim
61 words
A COMPOUND CAPABLE OF ISOCYANATE REACTION AT TEMPERATURES WITHIN THE RANGE OF FROM ABOUT 130*C. TO ABOUT 220*C. WHICH IS PREPARED BY A PROCESS WHICH COMPRISES REACTING AN AROMATIC PRIMARY AMINE HAVING A TERTIARY CARBONAMIDE GROUP IN THE ORTHO POSITION WITH RESPECT TO AN AMINO GROUP AND PHOSGENE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 10*C. TO ABOUT 150*C.
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) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |