US5496860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antibacterial fiber, textile and water-treating element using the fiber and method of producing the same
Assignee: Nitivy Co Ltd
•
Filing: 1993-12-28
•
Granted: 1996-03-05
•
Expires: 2013-12-28
Abstract
Abstract An antibacterial fiber includes an ion exchange fiber and an antibacterial metal ion entrapped within the ion exchange fiber through an ion exchange reaction. The invention also discloses antibacterial textiles and water-treating element using the fibers.
Inventors
- 👤 Nobuya Matsumoto
- 👤 Shinichi Kunisaki
- 👤 Goro Fujiwara
- 👤 Mitsunobu Masuda
- 👤 Hiroshi Horie
- 👤 Asaichi Kawanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:44
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42; C08F8/04; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1369; Y10T442/00; Y10T442/40; Y10T442/475; Y10T442/60; Y10T442/647; Y10T442/648
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
47 words
A method of producing an antibacterial fiber comprising the steps of: bonding, through an ion exchange reaction, complex ion of silver, copper or zinc with ion exchange group of cation exchange fiber having sulfonic or carboxyl group as ion exchange group thereof; and reducing the complex ion.
Claim 2
Independent Claim
47 words
A method of producing an antibacterial fiber comprising the steps of: bonding, through an ion exchange reaction, complex ion of silver, copper or zinc with ion exchange group of cation exchange fiber having sulfonic or carboxyl group as ion exchange group thereof; and reducing the complex ion.
Claim 3
Independent Claim
48 words
A method of producing an antibacterial fiber comprising the steps of: bonding, through an ion exchange reaction, complex ion of silver, copper or zinc with ion exchange groups of an anion exchange fiber having primary through tertiary amine groups and quaternary ammonium group; and reducing the complex ion.
Claim 4
Independent Claim
48 words
A method of producing an antibacterial fiber comprising the steps of: bonding, through an ion exchange reaction, complex ion of silver, copper or zinc with ion exchange groups of an anion exchange fiber having primary through tertiary amine groups and quaternary ammonium group; and reducing the complex ion.
Claim 5
Independent Claim
107 words
A method of producing an antibacterial fiber containing at least silver ion, which comprises the steps of: bonding, through an ion exchange reaction, a cation of more than one kind of alkali metals or alkaline earth metals selected from the group consisting of Na, K, Ca and Mg with entire ion exchange groups of a cation exchange fiber having sulphonic acid groups or carboxyl groups as ion exchange groups thereof; and replacing a portion of said alkali metals or alkaline earth metals bonded to said ion exchange groups with said silver ion alone or with said silver ion and either copper ion or zinc ion in combination.
Claim 6
Independent Claim
107 words
A method of producing an antibacterial fiber containing at least silver ion, which comprises the steps of: bonding, through an ion exchange reaction, a cation of more than one kind of alkali metals or alkaline earth metals selected from the group consisting of Na, K, Ca and Mg with entire ion exchange groups of a cation exchange fiber having sulphonic acid groups or carboxyl groups as ion exchange groups thereof; and replacing a portion of said alkali metals or alkaline earth metals bonded to said ion exchange groups with said silver ion alone or with said silver ion and either copper ion or zinc ion in combination.
Claim 7
Dependent Claim
35 words
A method according to claim 3, wherein an amount of the exchange exchanged by said silver, copper and zinc ions is less than 50% of a total cation exchange capacity of said ion exchange fiber.
Claim 8
Dependent Claim
35 words
A method according to claim 3, wherein an amount of the exchange exchanged by said silver, copper and zinc ions is less than 20% of a total cation exchange capacity of said ion exchange fiber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-03-05 | 1999-09-04 | 2000-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-05 | 2003-09-04 | 2004-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-05 | 2007-09-04 | 2008-03-05 | $7700.00 | Window Closed / Lapsed |