US3284487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adducts of orthocarboxylates and isocyanates and their preparation
Assignee: Bayer AG
•
Filing: 1962-08-24
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Granted: 1966-11-08
•
Expires: 1982-08-24
Abstract
No abstract record available.
Inventors
- 👤 Brachel Hanswilli Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:16
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/8093; C07; C07C; C07C271/00; C07C271/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
A COMPOSITION HAVING THE FOLLOWING GENERAL FORMULA: (OCN-)M-R(-N(-COO-R1)-C(-R2)(-O-R1)2)N WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CYCLOALIPHATIC AND AROMATIC RADICALS; THE R1 IS ARE SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, CYCLOALKYL HAVING FROM 4 TO 6 CARBON ATOMS, AND MONONUCLEAR ARYL RADICALS; R2 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL AND MONONUCLEAR ARYL RADICALS; M IS IN INTEGER OF FROM 0 TO 3; N IS AN INTEGER OF FROM 1 TO 4, AND THE SUM OF M AND N IS EQUAL TO THE VALENCE OF R.
Claim 2
Dependent Claim
93 words
A COMPOSITION HAVING THE FOLLOWING GENERAL FORMULA: (OCN-)M-R(-N(-COO-R1)-C(-R2)(-O-R1)2)N WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CYCLOALIPHATIC AND AROMATIC RADICALS; THE R1 IS ARE SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, CYCLOALKYL HAVING FROM 4 TO 6 CARBON ATOMS, AND MONONUCLEAR ARYL RADICALS; R2 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL AND MONONUCLEAR ARYL RADICALS; M IS IN INTEGER OF FROM 0 TO 3; N IS AN INTEGER OF FROM 1 TO 4, AND THE SUM OF M AND N IS EQUAL TO THE VALENCE OF R.
Claim 3
Independent Claim
22 words
A METHOD FOR THE PREPARATION O A URETHANE WHICH COMPRISES CONTACTING AN ORTHOCARBOXYLIC ACID ESTER WITH AN ORGAIC ISOCYANATE OF THE FORMULA
Claim 4
Independent Claim
22 words
A METHOD FOR THE PREPARATION O A URETHANE WHICH COMPRISES CONTACTING AN ORTHOCARBOXYLIC ACID ESTER WITH AN ORGAIC ISOCYANATE OF THE FORMULA
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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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |