Patent EP0295200A1 successfully refreshed from Google Patents.
US4605564A
Expired / Lapsed
US
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Coating process for making antimicrobial medical implant device
Assignee: Biological and Environmental Control Laboratories Inc
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Filing: 1984-01-23
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Granted: 1986-08-12
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Expires: 2004-01-23
Abstract
Abstract The invention relates to an antimicrobial medical implant device having a chlorinated phenol impregnated therein, such as para-chloro-meta-xylenol.
Inventors
- 👤 James P. Kulla
- 👤 Norman J. Huff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:56
CPC Classifications
A; A61; A61L; A61L29/00; A61L29/14; A61L29/16; A01; A01N; A01N31/00; A01N31/08; A61L27/00; A61L27/50; A61L27/54; A61L2300/00; A61L2300/20; A61L2300/202; A61L2300/40; A61L2300/404
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
98 words
A process for making an antimicrobial medical implant device comprising the steps of: providing a medical implant device formed of a composition comprising a medical grade polymer or latex; treating said polymer or latex with a solution of para-chloro-meta-xylenol having a very low solubility in water and aqueous body fluids, with the para-chloro-meta-xylenol dissolved in an organic solvent to cause swelling of the polymer or latex; thereafter removing the solvent from the solution to trap or precipitate the para-chloro-meta-xylenol in the polymer or latex structure; whereby the para-chloro-meta-xylenol is impregnated within the structure of the polymer or latex.
Claim 2
Dependent Claim
98 words
A process for making an antimicrobial medical implant device comprising the steps of: providing a medical implant device formed of a composition comprising a medical grade polymer or latex; treating said polymer or latex with a solution of para-chloro-meta-xylenol having a very low solubility in water and aqueous body fluids, with the para-chloro-meta-xylenol dissolved in an organic solvent to cause swelling of the polymer or latex; thereafter removing the solvent from the solution to trap or precipitate the para-chloro-meta-xylenol in the polymer or latex structure; whereby the para-chloro-meta-xylenol is impregnated within the structure of the polymer or latex.
Claim 3
Dependent Claim
18 words
A process as described in claim 1, wherein the para-chloro-meta-xylenol is 0.1 percent to 10 percent by weight.
Claim 4
Dependent Claim
12 words
A process as described in claim 1, wherein said solvent is dichloromethane.
Claim 5
Dependent Claim
13 words
A process as described in claim 1, wherein said solvent is carbon tetrachloride.
References Cited (Backward Citations)
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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) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |