Patent US4116850A successfully refreshed from Google Patents.
US4116850A
Expired / Lapsed
US
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Drain opener
Assignee: Theochem Laboratories Inc
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Filing: 1977-04-21
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Granted: 1978-09-26
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Expires: 1997-04-21
Abstract
Abstract A drain opener composition and process comprising the application of an aqueous solution of a soluble metallic hydroxide, a chlorine releasing salt, and a catalyst to the clogged drain for fast opening of said drain.
Inventors
- 👤 J. Barry Ruck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:13
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/02; C11D7/04; C11D7/06; C11D3/00; C11D3/0005; C11D3/0052
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
59 words
A drain opening composition consisting essentially of 10-60% by weight of a water-soluble hydroxide selected from the group of ammonium and alkali metal hydroxides, 0.1-15.0 by weight of a chlorine releasing agent, and 0.01-10% by weight of a compound selected from the group consisting of the chlorides of the period six metals of the periodic table of the elements.
Claim 2
Dependent Claim
59 words
A drain opening composition consisting essentially of 10-60% by weight of a water-soluble hydroxide selected from the group of ammonium and alkali metal hydroxides, 0.1-15.0 by weight of a chlorine releasing agent, and 0.01-10% by weight of a compound selected from the group consisting of the chlorides of the period six metals of the periodic table of the elements.
Claim 3
Dependent Claim
26 words
The drain opening composition of claim 1 wherein said hydroxide is potassium hydroxide, said chloride releasing salt is trichlorisocyanuric acid and said compound is barium chloride.
Claim 4
Dependent Claim
26 words
The drain opening composition of claim 1 wherein said hydroxide is potassium hydroxide, said chlorine releasing salt is calcium hypochlorite and said compound is barium chloride.
Claim 5
Dependent Claim
21 words
A process of opening a clogged drain, comprising the application of a solution of the drain opening composition of claim 1.
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) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |