US2884435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminoaryl isocyanates and their manufacture
Assignee: FMC Corp
•
Filing: 1957-02-25
•
Granted: 1959-04-28
•
Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 Tazuma James Junkichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:02
CPC Classifications
C; C07; C07C; C07C265/00; C07C265/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
AMINOPOLYHALO PHENYL ISOCYANATES HAVING IN EACH POSITION ORTHO TO AN AMINO RADICAL AND IN EACH POSITION ORTHO TO AN ISOCYANATE RADICAL A HALOGEN SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE.
Claim 2
Dependent Claim
33 words
AMINOPOLYHALO PHENYL ISOCYANATES HAVING IN EACH POSITION ORTHO TO AN AMINO RADICAL AND IN EACH POSITION ORTHO TO AN ISOCYANATE RADICAL A HALOGEN SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE.
References Cited (Backward Citations)
US2428843A
Cited
US2625561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |