US2794786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thionin dye-ion exchange resin indicator compounds
Assignee: Security Trust Co
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Filing: 1955-05-27
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Granted: 1957-06-04
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Expires: 1975-05-27
Abstract
No abstract record available.
Inventors
- 👤 Harry L Segal
- 👤 Leon L Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:27
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/84; Y; Y10; Y10T; Y10T436/00; Y10T436/15; Y10T436/153333
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A DIAGNOSTIC INDICATOR ION EXCHANGE COMPOUND FOR DETERMINING WITHOUT INTUBATION WHETHER THE PH OF GASTRIC JUICE IN A STOMACH IS ABOVE OR BELOW A PREDETERMINED PH VALUE, COMPRISING A NON-TOXIC, INSOLUBLE GRANULATED CATION EXCHANGE COMPLEX SYNTHETIC POLYMER RESIN CONTAINING FROM ABOUT 0.01 MILLIMOLE TO ABOUT 0.6 MILLIMOLE OF DISPLACEABLE NON-TOXIC THIONIN DYE IONS PER GRAM OF RESIN SO AS TO BE DISPLACEABLE FROM THE ION EXCHANGE RESIN PREDOMINANTLY BY THE IONS FROM FREE HYDROCHLORIC ACID SECRETED IN THE STOMACH, SAID DYE IONS BEING ABSORBED READILY FROM THE GASTROINTESTINAL TRACT AND BEING EASILY DETECTED BY THE DYE COLOR IN URINE OR BLOOD.
Claim 2
Dependent Claim
101 words
A DIAGNOSTIC INDICATOR ION EXCHANGE COMPOUND FOR DETERMINING WITHOUT INTUBATION WHETHER THE PH OF GASTRIC JUICE IN A STOMACH IS ABOVE OR BELOW A PREDETERMINED PH VALUE, COMPRISING A NON-TOXIC, INSOLUBLE GRANULATED CATION EXCHANGE COMPLEX SYNTHETIC POLYMER RESIN CONTAINING FROM ABOUT 0.01 MILLIMOLE TO ABOUT 0.6 MILLIMOLE OF DISPLACEABLE NON-TOXIC THIONIN DYE IONS PER GRAM OF RESIN SO AS TO BE DISPLACEABLE FROM THE ION EXCHANGE RESIN PREDOMINANTLY BY THE IONS FROM FREE HYDROCHLORIC ACID SECRETED IN THE STOMACH, SAID DYE IONS BEING ABSORBED READILY FROM THE GASTROINTESTINAL TRACT AND BEING EASILY DETECTED BY THE DYE COLOR IN URINE OR BLOOD.
References Cited (Backward Citations)
US2119189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |