Patent US2997444A successfully refreshed from Google Patents.
US2997444A
Expired / Lapsed
US
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Drain-pipe cleaning composition
Assignee: JPMorgan Chase Bank NA
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Filing: 1957-01-14
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Granted: 1961-08-22
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Expires: 1977-01-14
Abstract
No abstract record available.
Inventors
- 👤 Martin Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:52
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/02; C11D7/04; C11D7/10; C11D3/00; C11D3/0005; C11D3/0042; C11D7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD FOR CLEANING DRAIN-PIPES WHICH COMPRISES PLACING IN A DRAIN-PIPE TO BE CLEANED, A DRY COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 25 PARTS BY WEIGHT OF CAUSTIC ALKALI AND ABOUT 1 TO 7 PARTS BY WEIGHT OF AN ANTICLOGGING COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROSULFIDE, POTASSIUM HYDROSULFIDE, SODIUM SULFIDE, POTASSIUM SULFIDE, SODIUM THIOGLYCOLATE, POTASSIUM THIOGLYCOLATE, GUANIDINE THIOGLYCOLATE, BUNTE SALTS, AND MIXTURES THEREOF AND THEN IN THE DRAIN-PIPE REACTING SAID COMPOSITION IN THE PRESENCE OF WATER WITH WATER-INSOLUBLE ORGANIC MATTER WHICH IS CLOGGING SAID DRAIN-PIPE TO PRODUCE AN AQUEOUS SOLUTION OF SAID ORGANIC MATTER.
Claim 2
Independent Claim
96 words
A METHOD FOR CLEANING DRAIN-PIPES WHICH COMPRISES PLACING IN A DRAIN-PIPE TO BE CLEANED, A DRY COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 25 PARTS BY WEIGHT OF CAUSTIC ALKALI AND ABOUT 1 TO 7 PARTS BY WEIGHT OF AN ANTICLOGGING COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROSULFIDE, POTASSIUM HYDROSULFIDE, SODIUM SULFIDE, POTASSIUM SULFIDE, SODIUM THIOGLYCOLATE, POTASSIUM THIOGLYCOLATE, GUANIDINE THIOGLYCOLATE, BUNTE SALTS, AND MIXTURES THEREOF AND THEN IN THE DRAIN-PIPE REACTING SAID COMPOSITION IN THE PRESENCE OF WATER WITH WATER-INSOLUBLE ORGANIC MATTER WHICH IS CLOGGING SAID DRAIN-PIPE TO PRODUCE AN AQUEOUS SOLUTION OF SAID ORGANIC MATTER.
References Cited (Backward Citations)
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Cited
US1129056A
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US1693678A
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US1973130A
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US2876781A
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US2472684A
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US2488832A
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US2637670A
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US2653121A
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US2631965A
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US2615828A
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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) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |