US5331037A
Expired / Lapsed
US
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Extruded solid composite articles and compositions for producing same
Assignee: Koslow Technologies Corp
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Filing: 1993-04-01
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Granted: 1994-07-19
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Expires: 2013-04-01
Abstract
Abstract Extruded composite solid articles from feed mixtures comprising a substantially uniform mixture of particulate binder material and particulate primary material in which the feed mixture is forced through an extrusion die of substantially uniform cross-section and subject to heat, pressure and cooling which consolidates the feed mixture whereby it emerges from the die as a solid composite article and in which the pressure in the extrusion die is supplied by back-pressuring means external of the die. Solid filter elements of activated carbon particles for a wide variety of filtering applications may be formed.
Inventors
- 👤 Evan E. Koslow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:07
CPC Classifications
C; C04; C04B; C04B38/00; B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1638; B01D39/1653; B01D39/1661; B01D39/20; B01D39/2055; B01D39/2058; B01D39/2062; B01D39/2068; B01D39/2072; B01D39/2079; B01J; B01J20/00; B01J20/02; B01J20/20; B29; B29C; B29C48/00; B29C48/022; B29C48/03; B29C48/06; B29C48/09; B29C48/25; B29C48/78; B29C48/793; B29C48/80; B29C48/83; B29C48/832; B29C48/86; B29C48/865; B29C48/88; B29C48/90; B29C48/901; B29C48/903; B29C48/92; B01D2239/00; B01D2239/08; B01D2239/086; B01D2239/10; B01D2239/12; B01D2239/1216; B01D2239/1241; B01D2239/125; B01D2239/1291; B29C2948/00; B29C2948/92; B29C2948/92504; B29C2948/92514; B29C2948/9258; B29C2948/926; B29C2948/92704; B29C2948/92809; B29C2948/92819; B29C2948/92857; B29C2948/92866; B29C2948/92876; B29C2948/92895; B29C2948/92904; B29C2948/92952; B29C48/885; B29C48/911; B29C48/9115; B29C48/912; B29C48/9135; C04B2111/00; C04B2111/00034; C04B2111/00129; C04B2111/00474; C04B2111/00793; Y; Y10; Y10S; Y10S425/00; Y10S425/004; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139; Y10T428/25; Y10T428/30
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
113 words
An extruded composite solid article formed by extrusion of an extrudable composition comprising a substantially uniform mixture of: a) about 50% to about 70% by weight activated carbon particles as powdered or granular primary particles having a diameter of from about 0.1 to about 3000 micrometers; b) about 27.5% to about 37.5% by weight lubricating oil; c) about 4.0% to about 22.5% by weight thermoplastic binder particles having a diameter of from about 0.1 to about 250 micrometers and optionally d) up to about 3% by weight solid state lubricant, and wherein said activated carbon particles have a softening temperature at least about 25° C. above the softening temperature of the binder particles.
Claim 2
Dependent Claim
113 words
An extruded composite solid article formed by extrusion of an extrudable composition comprising a substantially uniform mixture of: a) about 50% to about 70% by weight activated carbon particles as powdered or granular primary particles having a diameter of from about 0.1 to about 3000 micrometers; b) about 27.5% to about 37.5% by weight lubricating oil; c) about 4.0% to about 22.5% by weight thermoplastic binder particles having a diameter of from about 0.1 to about 250 micrometers and optionally d) up to about 3% by weight solid state lubricant, and wherein said activated carbon particles have a softening temperature at least about 25° C. above the softening temperature of the binder particles.
Claim 3
Dependent Claim
65 words
An extruded composite solid article of claim 1 which is a filter element formed from a composition comprising a substantially uniform mixture of: a) about 58% by weight of activated carbon particle of mesh size about 12×40; b) about 35% by weight lubricating oil; c) about 5% by weight nylon binder particles of about -60 mesh size, and d) about 2% by weight sodium stearate.
Claim 4
Dependent Claim
110 words
An extruded composite solid article formed by extrusion of an extrudable composition comprising a substantially uniform mixture of: a) about 20 to about 60% by weight activated carbon particles; and b) about 27.5% to about 65% by weight micronized manganese dioxide particles of at least about -100 mesh size as powdered or granular primary particles having a diameter of from about 0.1 to about 3000 micrometers, and c) about 12.5% to about 22.5% by weight thermoplastic binder particles having diameters between about 0.1 and about 250 micrometers, and wherein said activated carbon particles have a softening temperature at least about 25° C. above the softening temperature of the binder particles.
Claim 5
Dependent Claim
110 words
An extruded composite solid article formed by extrusion of an extrudable composition comprising a substantially uniform mixture of: a) about 20 to about 60% by weight activated carbon particles; and b) about 27.5% to about 65% by weight micronized manganese dioxide particles of at least about -100 mesh size as powdered or granular primary particles having a diameter of from about 0.1 to about 3000 micrometers, and c) about 12.5% to about 22.5% by weight thermoplastic binder particles having diameters between about 0.1 and about 250 micrometers, and wherein said activated carbon particles have a softening temperature at least about 25° C. above the softening temperature of the binder particles.
Claim 6
Dependent Claim
56 words
An extruded composite solid article of claim 3 which is a filter element formed from a composition comprising a substantially uniform mixture of: a) about 45% by weight activated carbon particles of a mesh size of about 50×200; b) about 40% by weight of micronized manganese dioxide, and c) about 15% by weight polyethylene binder particles.
Claim 7
Dependent Claim
56 words
An extruded composite solid article of claim 3 which is a filter element formed from a composition comprising a substantially uniform mixture of: a) about 30% by weight activated carbon particles of a mesh size of about 50×200; b) about 55% by weight of micronized manganese dioxide, and c) about 15% by weight polyethylene binder particles.
Claim 8
Dependent Claim
89 words
An extruded composite solid article formed by extrusion of an extrudable composition comprising a substantially uniform mixture of: a) about 80% to about 88.5% by weight activated carbon particles as powdered or granular primary particles having a diameter of from about 0.1 to about 3000 micrometers; and b) about 12.5% to about 20% by weight binder particles having diameters between about 0.1 and about 250 micrometers, and wherein said activated carbon particles have a softening temperature at least about 25° C. above the softening temperature of the binder particles.
Claim 9
Dependent Claim
89 words
An extruded composite solid article formed by extrusion of an extrudable composition comprising a substantially uniform mixture of: a) about 80% to about 88.5% by weight activated carbon particles as powdered or granular primary particles having a diameter of from about 0.1 to about 3000 micrometers; and b) about 12.5% to about 20% by weight binder particles having diameters between about 0.1 and about 250 micrometers, and wherein said activated carbon particles have a softening temperature at least about 25° C. above the softening temperature of the binder particles.
Claim 10
Dependent Claim
53 words
An extruded composite solid article of claim 6 which is a filter element formed from a composition comprising a substantially uniform mixture of: a) about 65% by weight of 20×50 mesh activated carbon particles and about 20% by weight 80×325 mesh activated carbon particles, and b) about 15% by weight polyethylene binder particles.
Claim 11
Dependent Claim
102 words
A composition comprising a substantially uniform mixture of: a) about 50% to about 70% by weight activated carbon particles as powdered or granular primary particles having a diameter of from about 0.1 to about 3000 micrometers; b) about 27.5% to about 37.5% by weight lubricating oil; c) about 4.0% to about 22.5% by weight thermoplastic binder particles having diameter of from about 0.1 to about 250 micrometers and optionally d) up to about 3% by weight solid state lubricant, and wherein said activated carbon particles have a softening temperature at least about 25° C. above the softening temperature of the binder particles.
Claim 12
Dependent Claim
102 words
A composition comprising a substantially uniform mixture of: a) about 50% to about 70% by weight activated carbon particles as powdered or granular primary particles having a diameter of from about 0.1 to about 3000 micrometers; b) about 27.5% to about 37.5% by weight lubricating oil; c) about 4.0% to about 22.5% by weight thermoplastic binder particles having diameter of from about 0.1 to about 250 micrometers and optionally d) up to about 3% by weight solid state lubricant, and wherein said activated carbon particles have a softening temperature at least about 25° C. above the softening temperature of the binder particles.
Claim 13
Dependent Claim
52 words
A composition of claim 8 comprising a substantially uniform mixture of: a) about 58% by weight activated carbon particle of mesh size about 12×40; b) about 35% by weight lubricating oil; c) about 5% by weight nylon binder particles of about -60 mesh size, and d) about 2% by weight sodium stearate.
Claim 14
Dependent Claim
103 words
A composition of claim 8 comprising a substantially uniform mixture of: a) about 20 to about 60% by weight activated carbon particles and; b) about 27.5% to about 65% by weight micronized manganese dioxide particles of at least about -100 mesh size as powdered or granular primary particles having a diameter of from about 0.1 to about 3000 micrometers, and c) about 12.5% to about 22.5% by weight thermoplastic binder particles having diameters between about 0.1 and about 250 micrometers, and wherein said activated carbon particles have a softening temperature at least about 25° C. above the softening temperature of the binder particles.
Claim 15
Dependent Claim
44 words
A composition of claim 10 comprising a substantially uniform mixture of: a) about 45% by weight activated carbon particles of a mesh size of about 50×200; b) about 40% by weight of micronized manganese dioxide, and c) about 15% by weight polyethylene binder particles.
Claim 16
Dependent Claim
43 words
A composition of claim 10 comprising a substantially uniform mixture of: a) about 30% by weight activated carbon particles of a mesh size of about 50×200; b) about 55% by weight of micronized manganese dioxide, c) about 15% by weight polyethylene binder particles.
Claim 17
Dependent Claim
80 words
A composition comprising a substantially uniform mixture of: a) about 80% to about 88.5% by weight activated carbon particles as powdered or granular primary particles having a diameter of from about 0.1 to about 3000 micrometers; and b) about 12.5% to about 20% by weight thermoplastic binder particles having diameters between about 0.1 and about 250 micrometers, and wherein said activated carbon particles have a softening temperature at least about 25° C. above the softening temperature of the binder particles.
Claim 18
Dependent Claim
80 words
A composition comprising a substantially uniform mixture of: a) about 80% to about 88.5% by weight activated carbon particles as powdered or granular primary particles having a diameter of from about 0.1 to about 3000 micrometers; and b) about 12.5% to about 20% by weight thermoplastic binder particles having diameters between about 0.1 and about 250 micrometers, and wherein said activated carbon particles have a softening temperature at least about 25° C. above the softening temperature of the binder particles.
Claim 19
Dependent Claim
40 words
A composition of claim 13 comprising a substantially uniform mixture of: a) about 65% by weight 20×50 mesh activated carbon particles and about 20% by weight 80×325 mesh activated carbon particles, and b) about 15% by weight polyethylene binder particles.
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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) | 1997-07-18 | 1998-01-17 | 1998-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-18 | 2002-01-17 | 2002-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-18 | 2006-01-17 | 2006-07-19 | $7700.00 | Window Closed / Lapsed |