Defensive publication
Abstract
Abstract DISCLOSED IS A PROCESS FOR PREPARING FIRE-RETARDANT POLYESTER FIBERS COMPRISING CONTACTING, AT A TEMPERATURE IN THE RANGE OF 350* TO 410*F., FOR A PERIOD OF TIME IN THE RANGE OF 15 TO 90 SECONDS A POLYESTER FIBER, A DISPERSE DYE, AND AN ORGANIC BROMINE COMPOUND OF AT LEAST 6 CARBON ATOMS THAT DOES NOT CHEMICALLY REACT WITH THE POLYESTER, THE ORGANIC BROMINE COMPOUND CONTAINING, BASED ON THE WEIGHT OF THE ORGANIC BROMINE COMPOUND, FROM ABOUT 40 TO ABOUT 85 WEIGHT PERCENT BROMINE. POLY(ETHYLENE TEREPHTHALATE) AND POLY(1,4-CYCLOHEXYLENEDIMETHYLENE TEREPHTHALATE) FIBERS AND PARTICULARLY DESIRABLE POLYESTER FIBERS. TRIS(2,3DIBROMOPROPYL) PHOSPHATE IS A PARTICULARLY DESIRABLE ORGANIC BROMINE COMPOUND.
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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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |