Patent US3247215A successfully refreshed from Google Patents.
US3247215A
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Quaternary methine dyes for acrylic fibers
Assignee: Eastman Kodak Co
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Filing: 1963-09-06
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Granted: 1966-04-19
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Expires: 1983-09-06
Abstract
No abstract record available.
Inventors
- 👤 John G Fisher
- 👤 David J Wallace
- 👤 James M Straley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:38
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C07D215/00; C07D215/02; C07D215/04; C07D215/10; C09; C09B; C09B23/00; C09B23/14; C09B23/143
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A QUATERNARY METHINE COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
7 words
A QUATERNARY METHINE COMPOUND HAVING 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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |