Patent US3248671A successfully refreshed from Google Patents.
Patent US5344702A successfully refreshed from Google Patents.
US5344702A
Expired / Lapsed
US
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Coated fibers
Assignee: Hoechst Celanese Chemical Co
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Filing: 1992-03-13
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Granted: 1994-09-06
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Expires: 2012-03-13
Abstract
Abstract Fibers coated with thin polymeric films are disclosed and claimed. In a preferred embodiment, microporous fibers are coated with a pre-cast polymeric film having a thickness of about 200 to about 2000 Angstroms.
Inventors
- 👤 Michael Haubs
- 👤 Walter Hassinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:53
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/18; B05D1/20; B01; B01D; B01D69/00; B01D69/08; B01D69/12; B01D69/122; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D06; D06B; D06B3/00; D06B3/04; D06B3/045; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/59; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249954; Y10T428/249955; Y10T428/249958; Y10T428/249962; Y10T428/249964; Y10T428/249971; Y10T428/249972; Y10T428/249978; Y10T428/249979; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2935; Y10T428/2938; Y10T428/2962; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/298
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
60 words
A composite membranous structure comprising in combination a hollow microporous fiber having pores with dimensions of from about 50 to about 500 Angstroms and thereupon, a thin film polymeric coating uniformly adhered about the circumference of the fiber, wherein said film has a cured thickness of from about 200 to about 2000 Angstroms in thickness and includes a bioerodible polymer.
Claim 2
Dependent Claim
60 words
A composite membranous structure comprising in combination a hollow microporous fiber having pores with dimensions of from about 50 to about 500 Angstroms and thereupon, a thin film polymeric coating uniformly adhered about the circumference of the fiber, wherein said film has a cured thickness of from about 200 to about 2000 Angstroms in thickness and includes a bioerodible polymer.
Claim 3
Dependent Claim
157 words
A fiber provided with a polymeric coating, which coating is applied by a process comprising providing a fluid bath capable off receiving on its surface a polymer solution, applying a polymer solution to the surface of said bath, said solution and said bath cooperating such that said solution forms a polymeric film layer on the surface of said bath, radially advancing the polymeric film layer to a coating region of the bath, drawing a fiber through said film layer at said coating region, wherein said fiber is provided with a film coating of substantially uniform thickness about its periphery adhered about the entire circumference of the fiber, said rate of application of polymer to the surface of the bath is substantially equal to the rate of application of polymer to said fiber and said film coating has an as applied thickness of from about 100 to 20,000 Angstroms and wherein said polymeric coating includes a bioerodible material.
Claim 4
Dependent Claim
157 words
A fiber provided with a polymeric coating, which coating is applied by a process comprising providing a fluid bath capable off receiving on its surface a polymer solution, applying a polymer solution to the surface of said bath, said solution and said bath cooperating such that said solution forms a polymeric film layer on the surface of said bath, radially advancing the polymeric film layer to a coating region of the bath, drawing a fiber through said film layer at said coating region, wherein said fiber is provided with a film coating of substantially uniform thickness about its periphery adhered about the entire circumference of the fiber, said rate of application of polymer to the surface of the bath is substantially equal to the rate of application of polymer to said fiber and said film coating has an as applied thickness of from about 100 to 20,000 Angstroms and wherein said polymeric coating includes a bioerodible material.
Claim 5
Dependent Claim
15 words
The coated fiber according to claim 2, wherein said bioerodible material is a bioerodible polymer.
References Cited (Backward Citations)
JPS63104618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-05 | 1998-03-07 | 1998-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-05 | 2002-03-07 | 2002-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-05 | 2006-03-07 | 2006-09-06 | $7700.00 | Window Closed / Lapsed |