Patent US3561968A successfully refreshed from Google Patents.
US3561968A
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Photoreactive titanium dioxide composition
Assignee: NL Chemicals Inc
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Filing: 1968-05-22
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Granted: 1971-02-09
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Expires: 1988-05-22
Abstract
Abstract THIS INVENTION RELATES IN GENERAL TO THE PREPARATION OF A TITANIUM DIOXIDE COMPOSITION WHICH POSSESSES PHOTOSENSITIVE PROPERTIES USEFUL IN COMMERCIAL SYSTEMS DESIGNED TO RESPOND TO EXPOSURE TO LIGHT I.G. PHOTOGRAPHIC EMULSION, COPY PAPER AND THE LIKE.
Inventors
- 👤 Horace Frank Dantro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:14
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/053; C01G23/0532; B; B82; B82Y; B82Y30/00; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3615; C09C1/3623; C09C3/00; C09C3/04; C09C3/041; C09C3/06; C09C3/063; G; G03; G03C; G03C1/00; G03C1/705; C01P; C01P2004/00; C01P2004/60; C01P2004/64; C01P2006/00; C01P2006/12; C01P2006/80
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |