US4390575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multichanneled diffusion device
Assignee: Baxter International Inc
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Filing: 1981-12-02
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Granted: 1983-06-28
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Expires: 2001-12-02
Abstract
Abstract A plurality of lengths of fibers may be disposed into a sheet-like array with the fibers being spaced from each other and defining channels therebetween. A pair of membranes is brought into adhering relation with opposed sides of the fibers of the sheet-like array to form a multichanneled flow device.
Inventors
- 👤 Clinton V. Kopp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:57
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/48; B29C65/50; B29C65/5007; B29C65/5035; B01; B01D; B01D63/00; B01D63/08; B01D63/081; B01D69/00; B01D69/10; B29C65/5092; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/438; B29C66/70; B29C66/72; B29C66/727; B29C65/4805; B29C65/481; B29C65/4815; B29C65/483; B29C65/5014; B29C66/71; B29L; B29L2011/00; B29L2011/0016; B29L2011/0041; B29L2031/00; B29L2031/14; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1084; Y10T428/00; Y10T428/13; Y10T428/1348; Y10T428/1352; Y10T428/1372; Y10T428/24; Y10T428/24132; Y10T428/24479; Y10T428/24521; Y10T428/24529; Y10T428/24562; Y10T428/24612; Y10T428/24744; Y10T428/24802; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249941
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
52 words
The method of disposing a plurality of lengths of fibers into a sheet-like array with the fibers being spaced from each other to define channels therebetween, and bringing a pair of semipermeable membranes into adhering relation with opposed sides of the fibers of said sheet-like array, to form a multichanneled flow device.
Claim 2
Independent Claim
52 words
The method of disposing a plurality of lengths of fibers into a sheet-like array with the fibers being spaced from each other to define channels therebetween, and bringing a pair of semipermeable membranes into adhering relation with opposed sides of the fibers of said sheet-like array, to form a multichanneled flow device.
Claim 3
Dependent Claim
17 words
The method of claim 1 in which said lengths of fibers are disposed parallel to each other.
Claim 4
Dependent Claim
19 words
The method of claim 1 in which said lengths of fibers are from 10 to 200 microns in diameter.
Claim 5
Dependent Claim
17 words
The method of claim 3 in which the spacing between said fibers is 50 to 500 microns.
Claim 6
Dependent Claim
17 words
The method of claim 1 in which the spacing of the fibers from each other is uniform.
Claim 7
Dependent Claim
29 words
The method of claim 1 in which membranes are made of a relatively flexible, limp material, said fibers have sufficient stiffness to cause said flow device to be self-supporting.
Claim 8
Dependent Claim
14 words
The method of claim 1 in which said fibers are solid in cross section.
Claim 9
Dependent Claim
24 words
The method of claim 1 in which said fibers are adhered to said membranes along essentially their entire lengths of contact with said membranes.
Claim 10
Dependent Claim
86 words
The method of claim 1 in which said lengths of fibers are disposed into a sheet-like array by winding said fibers about a drum with the wound fiber loops on said drum being spaced from each other; placing a band of adhesive-sealant transversely across said wound fiber loops; and cutting along the length of said band to sever said fiber loops into a strip of fibers having a portion of the band of adhesive-sealant extending across the entire width of said band at each end thereof.
Claim 11
Dependent Claim
112 words
The method of claim 1 in which said lengths of fibers are disposed into a sheet-like array by winding said fibers about a drum which carries one of said pair of membranes, with the wound fiber loops on the drum being spaced from each other and overlying said one membrane, under conditions to cause said fiber loops to adhere to said one membrane, and applying the other of said membranes to the sides of said lengths of wound fiber loops opposed to the one membrane under conditions to cause adherence of the lengths of fibers to the other of said membranes, and thereafter removing said fibers and adhered membranes from the drum.
Claim 12
Independent Claim
73 words
The method of disposing a plurality of lengths of parallel fibers into a sheet-like array with the fibers being spaced from each other to define channels therebetween said lengths of fibers being from 10 to 200 microns in diameter and spaced from 50 to 500 microns apart, and bringing a pair of semipermeable membranes into adhering relation with opposed sides of the fibers of said sheet-like array, to form a multichanneled flow device.
Claim 13
Independent Claim
73 words
The method of disposing a plurality of lengths of parallel fibers into a sheet-like array with the fibers being spaced from each other to define channels therebetween said lengths of fibers being from 10 to 200 microns in diameter and spaced from 50 to 500 microns apart, and bringing a pair of semipermeable membranes into adhering relation with opposed sides of the fibers of said sheet-like array, to form a multichanneled flow device.
Claim 14
Dependent Claim
25 words
The method of claim 11 in which the spacing of the fibers from each other is essentially uniform, said fibers being solid in cross section.
Claim 15
Dependent Claim
20 words
The method of claim 12 in which said fibers have sufficient stiffness to cause said flow device to be self-supporting.
Claim 16
Dependent Claim
24 words
The method of claim 13 in which said fibers are adhered to their membranes along essentially their entire lengths of contact with said membranes.
Claim 17
Dependent Claim
86 words
The method of claim 14 in which said lengths of fibers are disposed into a sheet-like array by winding said fibers about a drum with the wound fiber loops on said drum being spaced from each other; placing a band of adhesive-sealant transversely across said wound fiber loops; and cutting along the length of said band to sever said fiber loops into a strip of fibers having a portion of the band of adhesive-sealant extending across the entire width of said strip at each end thereof.
Claim 18
Dependent Claim
47 words
A multichanneled flow device which comprises a plurality of lengths of fibers in sheet-like array, with the fibers being spaced from each other to define channels therebetween, and a pair of semipermeable membranes positioned in adhering relation with opposed sides of the fibers of said sheet-like array.
Claim 19
Dependent Claim
47 words
A multichanneled flow device which comprises a plurality of lengths of fibers in sheet-like array, with the fibers being spaced from each other to define channels therebetween, and a pair of semipermeable membranes positioned in adhering relation with opposed sides of the fibers of said sheet-like array.
Claim 20
Dependent Claim
23 words
The flow device of claim 16 in which said lengths of fibers are solid in cross section and disposed parallel to each other.
Claim 21
Dependent Claim
20 words
The sheet-like array of claim 16 in which said lengths of fibers are from 10 to 200 microns in diameter.
Claim 22
Dependent Claim
18 words
The sheet-like array of claim 16 in which the spacing between said fibers is 50 to 500 microns.
Claim 23
Dependent Claim
18 words
The flow device of claim 16 in which the spacing of the fibers from each other is uniform.
Claim 24
Dependent Claim
31 words
The flow device of claim 16 in which said membranes are made of a relatively flexible material, and said fibers have sufficient stiffness to cause said flow device to be self-supporting.
Claim 25
Dependent Claim
25 words
The flow device of claim 16 in which said fibers are adhered to said membranes along essentially their entire lengths of contact with said membranes.
Claim 26
Dependent Claim
74 words
A multichanneled flow device which comprises a plurality of parallel fibers positioned in sheet-like array, with the fibers being spaced from each other by substantially uniform spacing to define channels therebetween, said fibers being from 10 to 200 microns in diameter and spaced apart from 50 to 500 microns, and semipermeable membranes positioned in adhering relation with opposed sides of the fibers of said sheet-like array along essentially the entire lengths of said membranes.
Claim 27
Dependent Claim
74 words
A multichanneled flow device which comprises a plurality of parallel fibers positioned in sheet-like array, with the fibers being spaced from each other by substantially uniform spacing to define channels therebetween, said fibers being from 10 to 200 microns in diameter and spaced apart from 50 to 500 microns, and semipermeable membranes positioned in adhering relation with opposed sides of the fibers of said sheet-like array along essentially the entire lengths of said membranes.
Claim 28
Dependent Claim
26 words
The flow device of claim 23 in which said fibers are solid in cross section and the spacing of the fibers from each other is uniform.
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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) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |