US2836974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicator for water content of liquids
Assignee: Ansul Chemical Co
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Filing: 1956-11-26
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Granted: 1958-06-03
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Expires: 1976-11-26
Abstract
No abstract record available.
Inventors
- 👤 Walter O Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:15
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N31/222
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
AN INDICATING ELEMENT FOR DETERMINING QUANTITIES OF WATER JUST ABOVE OR JUST BELOW THE RANGE OF 1.2 TO 2.4 PERCENT RELATIVE SATURATION IN LIQUIDS OF LOW WATER SOLUBILITY SELECTED FROM THE GROUP CONSISTING OF TRICHLOROMONOFLUOROMETHANE, DICHLORODIFLOUOMENTHANE, MONOCHOROTRIFLOUROMETHANE, MONOCHLORODIFLUOROMETHANE, METHYL CHLORIDE, GASOLINE AND KEROSENE ADAPTED TO BE IMIMERSED IN THE SAID LIQUIDS, SAID INDICATING MATERIAL COMPRISING A MET OF FIBRES CHEMICALLY INSERT TO COBALTOUS BROMIDE HAVING UNIFORMLY DISTRIBUTED THEREIN 8 PERCENT TO 160 PERCENT BY WEIGHT PURE ANHYDROUS COBALTOUS BROMIDE, THE COLOR OF THE INDICATING ELEMENT JUST ABOVE THE RANGE OF 1.2 TO 2.4 PERCENT RELATIVE SATURATION BEING PURPLE RED-PURPLE (MUNSEL COLOR (10.0 P) 7/8) AND THE COLOR JUST BELOW SAID RANGE BEING YELLOW GREEN (MUNSELL COLOR (2.5 G) 7/8).
Claim 2
Dependent Claim
119 words
AN INDICATING ELEMENT FOR DETERMINING QUANTITIES OF WATER JUST ABOVE OR JUST BELOW THE RANGE OF 1.2 TO 2.4 PERCENT RELATIVE SATURATION IN LIQUIDS OF LOW WATER SOLUBILITY SELECTED FROM THE GROUP CONSISTING OF TRICHLOROMONOFLUOROMETHANE, DICHLORODIFLOUOMENTHANE, MONOCHOROTRIFLOUROMETHANE, MONOCHLORODIFLUOROMETHANE, METHYL CHLORIDE, GASOLINE AND KEROSENE ADAPTED TO BE IMIMERSED IN THE SAID LIQUIDS, SAID INDICATING MATERIAL COMPRISING A MET OF FIBRES CHEMICALLY INSERT TO COBALTOUS BROMIDE HAVING UNIFORMLY DISTRIBUTED THEREIN 8 PERCENT TO 160 PERCENT BY WEIGHT PURE ANHYDROUS COBALTOUS BROMIDE, THE COLOR OF THE INDICATING ELEMENT JUST ABOVE THE RANGE OF 1.2 TO 2.4 PERCENT RELATIVE SATURATION BEING PURPLE RED-PURPLE (MUNSEL COLOR (10.0 P) 7/8) AND THE COLOR JUST BELOW SAID RANGE BEING YELLOW GREEN (MUNSELL COLOR (2.5 G) 7/8).
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) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |