US3567439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Borinium dyes as sensitizers for organic photoconductors
Assignee: Eastman Kodak Co
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Filing: 1968-09-23
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Granted: 1971-03-02
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Expires: 1988-09-23
Abstract
Abstract NOVEL METHINE DYES ARE PROVIDED WHICH FEATURE A 1,3,2DIOXABORINIUM SALT MOIETY, 1,3,2 - OXAZABORINIUM SALT MOIETY OR A 1,3,2-DIAZABORINIUM SALT MOIETY. ORGANIC PHOTOCONDUCTORS ARE SPECTRALLY SENSITIZED WITH THE NOVEL DYES OF THIS INVENTION. NOVEL INTERMEDIATES AND METHODS FOR THE PREPARATION OF SUCH INTERMEDIATES ARE ALSO PROVIDED.
Inventors
- 👤 Daniel S Daniel
- 👤 Donald W Heseltine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:26
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/36; C; C07; C07F; C07F5/00; C07F5/02; C07F5/04; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/062; G03G5/0664; G03G5/0666; G03G5/0668; G03G5/067
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |