US2842545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of
Assignee: —
•
Filing: —
•
Granted: 1958-07-08
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Expires: 1975-07-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:28
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/62; C07D263/64; C07D263/54; C07D263/56; C07D263/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
PROCESS FOR THE MANUFACTURE OF A:B-DI-(BENZOXAZOLYL-(2))-ETHYLENE COMPOUNDS WHICH COMPRISES CONDENSING, AT A TEMPERATURE RANGING FROM ABOUT 100 TO 200*C., TWO MOLECULAR PROPORTIONS OF (A) AN ORTHO-HYDROXY-AMINOBENZENE OF THE FORMULA
Claim 2
Dependent Claim
29 words
PROCESS FOR THE MANUFACTURE OF A:B-DI-(BENZOXAZOLYL-(2))-ETHYLENE COMPOUNDS WHICH COMPRISES CONDENSING, AT A TEMPERATURE RANGING FROM ABOUT 100 TO 200*C., TWO MOLECULAR PROPORTIONS OF (A) AN ORTHO-HYDROXY-AMINOBENZENE OF THE FORMULA
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) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |