Patent US4654341A successfully refreshed from Google Patents.
US4654341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and tablet for sanitizing toilets
Assignee: Occidental Chemical Corp
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Filing: 1985-10-07
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Granted: 1987-03-31
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Expires: 2005-10-07
Abstract
Abstract Disclosed is a tablet suitable for disinfecting a flush toilet comprising an alkali metal salt of dichloroisocyanuric acid and either calcium chloride or barium chloride, in which the mole ratio of the alkali metal salt of dichloroisocyanuric acid to chloride salt is no greater than 4:1. Also disclosed is a method of using the tablet.
Inventors
- 👤 G. Douglas Nelson
- 👤 Steve Vazopolos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:18
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/395; C11D3/3955; A; A01; A01N; A01N59/00; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/05; C11D17/00; C11D17/0047; C11D17/0056
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
68 words
A tablet suitable for disinfecting a flush toilet, comprising an alkali metal salt of dichloroisocyanuric acid and a chloride salt selected from calcium chloride and barium chloride, where the molar ratio of alkali metal dichloroisocyanuric acid to chloride salt is no greater than 4:1, said tablet being essentially free of sodium carbonate/bicarbonate buffer mixtures, and capable of prolonged release of chlorine through metered dispensers when immersed in water.
Claim 2
Dependent Claim
68 words
A tablet suitable for disinfecting a flush toilet, comprising an alkali metal salt of dichloroisocyanuric acid and a chloride salt selected from calcium chloride and barium chloride, where the molar ratio of alkali metal dichloroisocyanuric acid to chloride salt is no greater than 4:1, said tablet being essentially free of sodium carbonate/bicarbonate buffer mixtures, and capable of prolonged release of chlorine through metered dispensers when immersed in water.
Claim 3
Dependent Claim
18 words
The tablet of claim 1 wherein the alkali metal salt of dichloroisocyanuric acid is sodium dichloroisocyanuric acid dihydrate.
Claim 4
Dependent Claim
14 words
The tablet of claim 2, in which the chloride salt is calcium chloride dihydrate.
Claim 5
Dependent Claim
14 words
The tablet of claim 2 in which the chloride salt is barium chloride dihydrate.
Claim 6
Dependent Claim
26 words
The tablet of claim 1, further comprising a mold release agent selected from the group consisting of boric acid and monoglyceryl stearate. a mold release agent.
Claim 7
Dependent Claim
12 words
The tablet of claim 1 wherein the chloride salt is calcium chloride.
Claim 8
Dependent Claim
12 words
The tablet of claim 1 wherein the chloride salt is barium chloride.
Claim 9
Dependent Claim
22 words
The tablet of claim 1, wherein the mole ratio of alkali metal dichloroisocyanuric acid to chloride salt is no greater than 3:1.
Claim 10
Dependent Claim
20 words
The table of claim 1 wherein the mole ratio of alkali metal dichloroisocyanuric acid to chloride salt is about 1:2.
Claim 11
Dependent Claim
84 words
A tablet suitable for disinfecting a flush toilet, comprising at least about 40% by weight of sodium dichloroisocyanuric acid dihydrate, a chloride salt selected from the group consisting of barium chloride dihydrate and calcium chloride dihydrate, and one or more mold release agents, in which the mole ratio of sodium dichloroisocyanuric acid to chloride salt is no greater than 3:1, said tablet being essentially free of sodium carbonate/bicarbonate buffer mixtures, and capable of prolonged release of chlorine through metered dispensers when immersed in water.
Claim 12
Dependent Claim
84 words
A tablet suitable for disinfecting a flush toilet, comprising at least about 40% by weight of sodium dichloroisocyanuric acid dihydrate, a chloride salt selected from the group consisting of barium chloride dihydrate and calcium chloride dihydrate, and one or more mold release agents, in which the mole ratio of sodium dichloroisocyanuric acid to chloride salt is no greater than 3:1, said tablet being essentially free of sodium carbonate/bicarbonate buffer mixtures, and capable of prolonged release of chlorine through metered dispensers when immersed in water.
Claim 13
Dependent Claim
20 words
The tablet of claim 10 in which the mole ratio of sodium dichloroisocyanuric acid to chloride salt is about 1:2.
Claim 14
Dependent Claim
23 words
A method for disinfecting a flush toilet, comprising placing the tablet of claim 1 in contact with water provided to flush the toilet.
Claim 15
Dependent Claim
18 words
The method of claim 12 wherein the water provided to flush the toilet is contained in a tank.
Claim 16
Dependent Claim
23 words
A method for disinfecting a flush toilet, comprising placing the tablet of claim 10 in contact with water provided to flush the toilet.
Claim 17
Dependent Claim
18 words
The method of claim 14 wherein the water provided to flush the toilet is contained in a tank.
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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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |