US4201831A
Expired / Lapsed
US
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Magnetic adsorbent composite
Assignee: General Electric Co
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Filing: 1976-09-27
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Granted: 1980-05-06
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Expires: 1996-09-27
Abstract
Abstract Magnetic adsorbent composite composed of a magnetic substrate particle which is non-reactive under conditions of use and which is encapsulated with adherent activated carbon.
Inventors
- 👤 George M. J. Slusarczuk
- 👤 Ronald E. Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:20
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/28; B01J20/28002; B01J20/28009; B01J20/02; B01J20/20; B01J20/28004; B01J20/28014; B01J20/28026; B01J20/30; B01J20/32; B01J20/3291; B01J20/3293; B03; B03C; B03C1/00; B03C1/005; B03C1/01; B22; B22F; B22F1/00; B22F1/16; C; C02; C02F; C02F1/00; C02F1/28; C02F1/283; C02F1/48; C02F1/488; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
141 words
A process for producing a magnetic adsorbent composite which comprises providing a magnetic substrate particle ranging in size from about 100 Angstroms to about 10 millimeters in diameter, providing an organic material which is a solid at room temperature and which at a temperature ranging from about 50° C. to about 1000° C. at atmospheric pressure decomposes to yield elemental carbon and gaseous product of decomposition, admixing a plurality of said substrate particles with said organic material to form a substantially uniform mixture, heating said mixture to decompose said organic material yielding elemental carbon and gaseous product of decomposition; and grinding the resulting carbon-substrate particle mass producing a magnetic adsorbent composite of predetermined size ranging from about one micron to about 10 millimeters in diameter, said magnetic adsorbent being comprised of said substrate particle at least substantially encapsulated with said carbon.
Claim 2
Dependent Claim
141 words
A process for producing a magnetic adsorbent composite which comprises providing a magnetic substrate particle ranging in size from about 100 Angstroms to about 10 millimeters in diameter, providing an organic material which is a solid at room temperature and which at a temperature ranging from about 50° C. to about 1000° C. at atmospheric pressure decomposes to yield elemental carbon and gaseous product of decomposition, admixing a plurality of said substrate particles with said organic material to form a substantially uniform mixture, heating said mixture to decompose said organic material yielding elemental carbon and gaseous product of decomposition; and grinding the resulting carbon-substrate particle mass producing a magnetic adsorbent composite of predetermined size ranging from about one micron to about 10 millimeters in diameter, said magnetic adsorbent being comprised of said substrate particle at least substantially encapsulated with said carbon.
Claim 3
Dependent Claim
23 words
A process according to claim 1 wherein said magnetic substrate particle has a size ranging from about 100 Angstroms to about 4 millimeters.
Claim 4
Dependent Claim
22 words
A process according to claim 2 wherein said magnetic adsorbent composite range in size from about 5 microns to about 5 millimeters.
Claim 5
Dependent Claim
13 words
A process according to claim 1 wherein said organic material is steep asphalt.
Claim 6
Dependent Claim
16 words
A process according to claim 1 wherein said organic material is a vinylidine chloride-vinyl chloride copolymer.
Claim 7
Dependent Claim
71 words
A magnetic adsorbent composite ranging in diameter from about one micron to about 10 millimeters consisting essentially of a magnetic substrate particle ranging in diameter from about 100 Angstroms to about 4 millimeters, said substrate particle being at least substantially encapsulated with elemental active carbon in a thickness ranging from about 100 Angstroms to about 10 millimeters, with a plurality of said substrate particles in a matrix of said active carbon.
Claim 8
Dependent Claim
71 words
A magnetic adsorbent composite ranging in diameter from about one micron to about 10 millimeters consisting essentially of a magnetic substrate particle ranging in diameter from about 100 Angstroms to about 4 millimeters, said substrate particle being at least substantially encapsulated with elemental active carbon in a thickness ranging from about 100 Angstroms to about 10 millimeters, with a plurality of said substrate particles in a matrix of said active carbon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |