US4644021A
Expired / Lapsed
US
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Sustained release antimicrobial agents and methods of fouling control using the same
Assignee: Kurita Water Industries Ltd
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Filing: 1985-08-16
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Granted: 1987-02-17
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Expires: 2005-08-16
Abstract
Abstract Sustained release antimicrobial agents comprising a clathrate compound composed of a water-soluble antimicrobial agent, and 1,1,6,6-tetraphenyl-2,4-hexadiyne-1,6-diol or 1,1-di(2,4-dimethylphenyl)-2-propyne-1-ol, and methods of fouling control using the same.
Inventors
- 👤 Fumio Toda
- 👤 Masaru Okamoto
- 👤 Fujiaki Mochizuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:18
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1606; C09D5/1612; C09D5/1625; A; A01; A01N; A01N25/00; A01N25/08; A01N33/00; A01N33/16; A01N33/18; A01N33/20; A01N33/26; A01N35/00; A01N35/06; A01N37/00; A01N37/44; A01N37/48; A01N43/00; A01N43/72; A01N43/80; A01N47/00; A01N47/40
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
19 words
A sustained release antimicrobial agent comprising a clathrate compound composed of a water-soluble antimicrobial agent, and 1,1,6,6-tetraphenyl-2,4-hexadiyne-1,6-diol or 1,1-di(2,4-dimethylphenyl)-2-propyne-1-ol.
Claim 2
Dependent Claim
19 words
A sustained release antimicrobial agent comprising a clathrate compound composed of a water-soluble antimicrobial agent, and 1,1,6,6-tetraphenyl-2,4-hexadiyne-1,6-diol or 1,1-di(2,4-dimethylphenyl)-2-propyne-1-ol.
Claim 3
Dependent Claim
17 words
The sustained release antimicrobial agent as defined in claim 1, wherein said water-soluble antimicrobial agent is 5-chloro-2-methyl-4-isothiazolin-3-one.
Claim 4
Dependent Claim
17 words
The sustained release antimicrobial agent as defined in claim 1, wherein said water-soluble antimicrobial agent is hydrazine.
Claim 5
Dependent Claim
25 words
The sustained release antimicrobial agent as defined in claim 1, wherein said clathrate compound is contained in an amount of 1 to 100 weight %.
Claim 6
Dependent Claim
25 words
The sustained release antimicrobial agent as defined in claim 1, wherein said clathrate compound is contained in an amount of 5 to 50 weight %.
Claim 7
Dependent Claim
20 words
The sustained release antimicrobial agent as defined in claim 1, wherein said clathrate compound is in the form of tablets.
Claim 8
Independent Claim
23 words
A method of fouling control which comprises treatment with a clathrate compound composed of a water-soluble antimicrobial agent, and 1,1,6,6-tetraphenyl-2,4-hexadiyne-1,6-diol or 1,1-di(2,4-dimethylphenyl)-2-propyne-1- ol.
Claim 9
Independent Claim
23 words
A method of fouling control which comprises treatment with a clathrate compound composed of a water-soluble antimicrobial agent, and 1,1,6,6-tetraphenyl-2,4-hexadiyne-1,6-diol or 1,1-di(2,4-dimethylphenyl)-2-propyne-1- ol.
Claim 10
Dependent Claim
26 words
The method of fouling control as defined in claim 7, wherein water being treated is allowed to flow through a column packed with said clathrate compound.
Claim 11
Dependent Claim
40 words
The method of fouling control as defined in claim 7, wherein containers made of a material insoluble in water and permeable to water, and packed with said clathrate compound, are set submerged or afloat in the water system being treated.
Claim 12
Dependent Claim
27 words
The method of fouling control as defined in claim 7, wherein said clathrate compound is dispersed, in powder or fabricated form, in the water system being treated.
Claim 13
Dependent Claim
33 words
The method of fouling control as defined in claim 7, wherein said clathrate compound is fixed, in powder or fabricated form, to the surfaces of equipment used in the water system being treated.
Claim 14
Dependent Claim
39 words
The method of fouling control as defined in claim 7, wherein said clathrate compound is admixed to a coating resin and the composition thus obtained is coated on the surfaces of equipment used in the water system being treated.
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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) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |