Defensive publication
Abstract
Abstract ALPHA-IODO KETONES HAVING AN ELECTRON-ATTRACTING GROUP IN THE BETA POSITION ARE LIGHT SENSITIVE AND WHEN EXPOSED TO VISIBLE LIGHT DECOMPOSE WITH EVOLUTION OF FREE RADICALS. WHEN COATED ON A PHOTOGRAPHIC SUPPORT WITH A COMPONENT WHICH CHARGES COLOR UPON ATTACK BY FREE RADICALS, E.G., A STARCH-POTASSIUM IODIDE MIXTURE OR A TRIPHENYLMETHANE DYE, A PHOTOGRAPIC ELEMENT IS OBTAINED WHICH IS CAPABLE OF PRINT-OUT IMAGE FORMATION UPON EXPOSURE. THE KETONE CAN BE COATED ABOVE, BELOW OR WITH THE STARCHIODIDE COMPONENT. THE LIGHT SENSITIVE ALPHA-IODO KETONES ARE OF THE STRUCTURE WHEREIN R1 IS A HYDROCARBON GROUP SUCH AS ARYL, E.G., PHENYL OR ALKYL, E.G., LOWER ALKLY; AND R2 IS AN ELECTRON-WITHDRAWING GROUP SUCH AS ALKYLCARBONYL, ALKOXYCARBONYL, ARYLCARBONYL, CYANO OR THE LIKE; OR WHEREIN Q REPRESENTS THE ATOMS NECESSARY TO COMPLETE A SATURATED OR UNSATURATED HYDROCARBON RING. THE IMAGE CAN BE FIXED BY REMOVING THE UNEXPOSED ALPHA-IODO KETONE WITH A SOLVENT. EXAMPLES OF THE ALPHA-IODO KETONES INCLUDE: D R A W I N G
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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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |