US4346006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion membrane units with adhered semipermeable capillaries
Assignee: Baxter International Inc
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Filing: 1980-03-24
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Granted: 1982-08-24
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Expires: 2000-03-24
Abstract
Abstract A diffusion membrane unit comprising: in a first embodiment, a planar arrangement of parallel separate capillary membrane tubes and junction lines of adhesive material extending continuously across said parallel membrane tubes and continuously along the entire length of said arrangement; and in a second embodiment a plurality of planar single-layered arrays of parallel capillaries defining out of phase sinuous paths.
Inventors
- 👤 Clinton V. Kopp
- 👤 Dilip Shah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:28
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5227; B01; B01D; B01D63/00; B01D63/02; B01D63/021; B01D63/0231; B01D63/026; B29C65/00; B29C65/48; B29C65/52; B29C65/522; B29C65/526; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83415; B01D2323/00; B01D2323/42; B29C65/4805; B29C65/481; B29C65/4815; B29C65/482; B29C65/483; B29C66/70; B29C66/71; B29L; B29L2031/00; B29L2031/60; B29L2031/601; B29L2031/602; Y; Y10; Y10S; Y10S261/00; Y10S261/28; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24132; Y10T428/24802; Y10T428/24851
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
135 words
A diffusion membrane device comprising a joined plurality of semipermeable capillary membrane tubes comprising, a plurality of planar, single-layered arrays of substantially parallel capillary membrane tubes, said parallel tubes of each of said plurality of single-layered arrays lying in facing contact with at least one adjacent, single-layered, planar array, said plurality of planar arrays defining out of phase sinuous paths, portions of each single-layered array being out of contact with adjoining single-layered arrays, and other portions of each single-layered array being in facing, overlying relation with adjacent single-layered arrays, with the respective capillary membrane tubes of each said single-layered array crossing at an acute angle the tubes of the adjacent single-layered arrays, the crossing tubes of the respective single-layered arrays being adhered to each other, whereby said diffusion membrane device defines a single, unitary structure.
Claim 2
Dependent Claim
135 words
A diffusion membrane device comprising a joined plurality of semipermeable capillary membrane tubes comprising, a plurality of planar, single-layered arrays of substantially parallel capillary membrane tubes, said parallel tubes of each of said plurality of single-layered arrays lying in facing contact with at least one adjacent, single-layered, planar array, said plurality of planar arrays defining out of phase sinuous paths, portions of each single-layered array being out of contact with adjoining single-layered arrays, and other portions of each single-layered array being in facing, overlying relation with adjacent single-layered arrays, with the respective capillary membrane tubes of each said single-layered array crossing at an acute angle the tubes of the adjacent single-layered arrays, the crossing tubes of the respective single-layered arrays being adhered to each other, whereby said diffusion membrane device defines a single, unitary structure.
Claim 3
Dependent Claim
44 words
The diffusion membrane device of claim 1 which is inserted into a housing, and connected to manifold members of said housing to define a first flow path within the bores of said tubes and a second flow path along the exteriors of said tubes.
Claim 4
Dependent Claim
13 words
The diffusion membrane device of claim 1 which comprises two flat, sinuous arrays.
Claim 5
Dependent Claim
123 words
A diffusion membrane device which comprises a joined plurality of semipermeable capillary membrane tubes defining hollow bores and a length defined axially along said tubes, occupying a flat, substantially planar array, junction line means of cured adhesive material extending across said flat array to adhere the membrane tubes together in a unitary structure, a housing enclosing said flat array with manifold port means at opposed ends of the tubes defining a first, separate flow path within bores of said tubes, and a second, separate flow path along the exteriors of said tubes, said junction line means extending continuously along substantially the entire length of said capillary membrane tubes and extending substantially the entire distance between said manifold port means at said opposed ends.
Claim 6
Dependent Claim
123 words
A diffusion membrane device which comprises a joined plurality of semipermeable capillary membrane tubes defining hollow bores and a length defined axially along said tubes, occupying a flat, substantially planar array, junction line means of cured adhesive material extending across said flat array to adhere the membrane tubes together in a unitary structure, a housing enclosing said flat array with manifold port means at opposed ends of the tubes defining a first, separate flow path within bores of said tubes, and a second, separate flow path along the exteriors of said tubes, said junction line means extending continuously along substantially the entire length of said capillary membrane tubes and extending substantially the entire distance between said manifold port means at said opposed ends.
Claim 7
Dependent Claim
23 words
The diffusion membrane device of claim 4 in which said cured adhesive material is essentially similar to the material comprising said membrane tubes.
Claim 8
Dependent Claim
22 words
The diffusion membrane device of claim 4 in which said membrane tubes and adhesive material are made of a semipermeable, cellulose-based material.
Claim 9
Dependent Claim
31 words
The diffusion membrane of claim 4 in which said junction line means crosses back and forth across the entire width of said plurality of capillary membrane tubes in a wave-shaped pattern.
Claim 10
Dependent Claim
30 words
The diffusion membrane of claim 7 in which a pair of junction line means of cured adhesive material extend along said plurality of capillary membrane tubes in an X-shaped pattern.
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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) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |