Patent US4276228A successfully refreshed from Google Patents.
US4276228A
Expired / Lapsed
US
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1,6,11-Undecane triisocyanate
Assignee: Toray Industries Inc
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Filing: 1979-06-12
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Granted: 1981-06-30
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Expires: 1999-06-12
Abstract
Abstract There is provided a novel aliphatic triisocyanate, 1,6,11-undecanetriisocyanate having the formula, ##STR1## and a method for production of the same. The novel triisocyanate is produced by reacting 1,6,11-undecanetriamine or its salts with phosgene.
Inventors
- 👤 Masaki Nishino
- 👤 Yutaka Yasuhara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:50
CPC Classifications
C; C07; C07C; C07C265/00; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
1,6,11-undecane triisocyanate represented by following formula, ##STR6##
Claim 2
Dependent Claim
7 words
1,6,11-undecane triisocyanate represented by following formula, ##STR6##
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) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |