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Abstract
Abstract GREEN MOLD PIECE AND CURING THE RESULTING FILTER. BY THE USE OF GRANULAR ACTIVATED CARBON A LARGER FILLED FACE AREA/ VOID RATIO MAY BE PROVIDED FOR CERTAIN APPLICATIONS SINCE THE GRANULAR MATERIAL PROVIDES SOME PERMEABILITY THROUGH THE FILLED FACE AREA WHILE THE VOIDS PERMIT CONTROL OF THE PRESSURE DROP CHARACTERISTIC OF THE FILTER. A BONDED ACTIVATED CARBON FILTER AND A METHOD FOR MAKING THE SAME ARE DISCLOSED. THE FILTER CONTAINS ACTIVATED CARBON AND A THERMOSETTING OR THERMOPLASTIC RESIN BINDER, AND IS A SELF-CONTAINED DISPOSABLE FILTER HAVING VOIDS IN SUFFICIENT AMOUNT TO PROVIDE A PRESSURE DROP OF ABOUT 0 TO 0.5 INCH OF WATER AT A FACE VELOCITY OF UP TO APPROXIMATELY 450 FEET PER MINUTE. THE METHOD INCLUDES MIXING THE DRY INGREDIENTS AND SUFFICIENT WATER, CHARGING TO A MOLD, APPLYING SUFFICIENT PRESSURE, DISCHARGING THE
Inventors
- 👤 H Holden
Bibliographic Details
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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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |