US3972818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood filter using glassy carbon fibers
Assignee: General Atomics Corp
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Filing: 1974-08-22
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Granted: 1976-08-03
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Expires: 1994-08-22
Abstract
Abstract A device for treating human blood prior to its return to a living human body. The blood filter employs a bed of fibers between about 1 and 100 microns in diameter, the outer surface of which is formed of impermeable carbon. Suitable fibrous substrates may be coated with vapor-deposited pyrolytic carbon, and the fibers may be supported between upper and lower screens which are likewise coated.
Inventors
- 👤 Jack C. Bokros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:32
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/02; B01D39/06; A; A61; A61M; A61M1/00; A61M1/36; A61M1/3621; A61M1/3627
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A disposable device for treating human blood prior to its return to a particular, single living human body, which device comprises a housing having a chamber formed therein, entrance means and exit means communicating with said chamber, and a bed of fibers disposed in said chamber so that a liquid must pass through said bed in order to travel from said entrance to said exit, said fiber bed being made up of individual fibers between about 1 micron and about 100 microns in diameter, said individual fibers being formed of impermeable glassy carbon, which glassy carbon constitutes the outer surface of said fibers.
Claim 2
Dependent Claim
103 words
A disposable device for treating human blood prior to its return to a particular, single living human body, which device comprises a housing having a chamber formed therein, entrance means and exit means communicating with said chamber, and a bed of fibers disposed in said chamber so that a liquid must pass through said bed in order to travel from said entrance to said exit, said fiber bed being made up of individual fibers between about 1 micron and about 100 microns in diameter, said individual fibers being formed of impermeable glassy carbon, which glassy carbon constitutes the outer surface of said fibers.
References Cited (Backward Citations)
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Cited
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US3677795A
Cited
US3593854A
Cited
US3811927A
Cited
US3795088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |