US5516480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bactericidal and/or fungicidal plastic parts for use in the medical field
Assignee: Individual
•
Filing: 1993-08-12
•
Granted: 1996-05-14
•
Expires: 2013-08-12
Abstract
Abstract PCT No. PCT/DE93/00726 Sec. 371 Date Mar. 31, 1995 Sec. 102(e) Date Mar. 31, 1995 PCT Filed Aug. 12, 1993 PCT Pub. No. WO94/04202 PCT Pub. Date Mar. 3, 1994.A process is provided for producing a plastic part that cannot be colonized by germs and/or fungi. The process includes the step of sequentially treating the plastic part with a swelling agent to provide a swollen plastic part, and then treating the swollen plastic part with a solution of a water-insoluble compound containing a bactericidal and/or fungicidal metal, where the solution has a bactericidally and/or fungicidally effective concentration of the insoluble compound.
Inventors
- 👤 Theodor Krall
- 👤 J. Peter Guggenbichler
- 👤 Monika Girisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:30
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/14; A61L31/16; A61L27/00; A61L27/50; A61L27/54; A61L29/00; A61L29/14; A61L29/16; A61L2300/00; A61L2300/10; A61L2300/102; A61L2300/40; A61L2300/404
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
65 words
A process for producing a plastic part that cannot be colonized by germs and/or fungi, comprising the step of sequentially treating the plastic part with a swelling agent to provide a swollen plastic part, and treating the swollen plastic part with a solution of a water-insoluble compound containing a bactericidal and/or fungicidal metal, said solution having a bactericidally and/or fungicidally effective concentration of said compound.
Claim 2
Dependent Claim
65 words
A process for producing a plastic part that cannot be colonized by germs and/or fungi, comprising the step of sequentially treating the plastic part with a swelling agent to provide a swollen plastic part, and treating the swollen plastic part with a solution of a water-insoluble compound containing a bactericidal and/or fungicidal metal, said solution having a bactericidally and/or fungicidally effective concentration of said compound.
Claim 3
Dependent Claim
19 words
The process of claim 1, wherein the compound containing a bactericidal and/or fungicidal metal is an inorganic metal salt.
Claim 4
Dependent Claim
18 words
The process of claim 1, wherein the bactericidal and/or fungicidal metal is silver, copper, gold, zinc or cerium.
Claim 5
Dependent Claim
21 words
The process of claim 1, wherein the solvent for the compound containing a bactericidal and/or fungicidal metal can complex the metal.
Claim 6
Dependent Claim
58 words
The process of claim 1, wherein the swollen plastic is treated with a solution of a compound containing a bactericidal and/or fungicidal metal without being dried first, and wherein the compound containing a bactericidal and/or fungicidal metal is not as readily soluble in the swelling agent for the plastic as in the solvent in which it is dissolved.
Claim 7
Dependent Claim
13 words
The process of claim 1 wherein the swelling agent is acetone or ethanol.
Claim 8
Dependent Claim
14 words
The process of claim 1 wherein the solvent contains an organic amine or ammonia.
Claim 9
Dependent Claim
12 words
The process of claim 7 wherein the organic amine is an alkanolamine.
Claim 10
Dependent Claim
10 words
The process of claim 8 wherein the alkanolamine is ethanolamine.
Claim 11
Dependent Claim
25 words
The process of claim 1 wherein the compound containing a bactericidal and/or fungicidal metal is silver chloride and the solvent for this compound is ethanolamine.
Claim 12
Dependent Claim
18 words
The process of claim 1 wherein the plastic part contains polyethylene, polypropylene, polyurethane, silicone, alone or in combination.
Claim 13
Dependent Claim
15 words
The process of claim 1 wherein the plastic part is a preproduct for medical devices.
Claim 14
Dependent Claim
17 words
A plastic part prepared according to the process of claim 1 that cannot be colonized by germs.
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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) | 1999-05-14 | 1999-11-13 | 2000-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-14 | 2003-11-13 | 2004-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-14 | 2007-11-13 | 2008-05-14 | $7700.00 | Window Closed / Lapsed |