Patent US2575373A successfully refreshed from Google Patents.
US2575373A
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US
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Acyloxy polymethine dte
Assignee: —
•
Filing: —
•
Granted: 1951-11-20
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Expires: 1968-11-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:23
CPC Classifications
C; C09; C09B; C09B61/00; C07; C07D; C07D293/00; C07D293/10; C07D293/12; C07D263/00; C07D263/52; C07D263/54; C07D263/56; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07D401/00; C07D401/02; C07D401/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
THE ACYLOXY DYE INTERMEDIATES WHICH ARE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
12 words
THE ACYLOXY DYE INTERMEDIATES WHICH ARE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |