Patent US2784221A successfully refreshed from Google Patents.
US3013884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salt tablets containing an ethylenediaminetetracetic acid compound and process of producing the same
Assignee: Blue Channel Corp
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Filing: 1959-08-06
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Granted: 1961-12-19
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Expires: 1979-08-06
Abstract
No abstract record available.
Inventors
- 👤 Carl R Fellers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:45
CPC Classifications
A; A23; A23B; A23B4/00; A23B4/02; A23B4/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS COMPRISING THOROUGHLY ADMIXING SODIUM CHLORIDE AND AT LEAST ABOUT 0.5% OF A WATER-SOLUBLE EDTA COMPOUND BY WEIGHT OF THE SODIUM CHLORIDE WITH SUFFICIENT WATER TO YIELD A SUBSTANTIALLY HOMOGENEOUS PASTE, DRYING THE PASTE, GRINDING THE DRIED MIXTURE INTO PARTICLES AT LEAST ABOUT 85% OF WHICH HAVE A SIZE PASSING A NO. 30 SCREEN, THOROUGHLY ADMIXING ABOUT 0.05 TO 2.0% OF A COHESIVE AGENT INTO THE GROUND MIXTURE, AND PRESSING THE RESULTING MIXTURE INTO TABLETS.
Claim 2
Dependent Claim
76 words
A PROCESS COMPRISING THOROUGHLY ADMIXING SODIUM CHLORIDE AND AT LEAST ABOUT 0.5% OF A WATER-SOLUBLE EDTA COMPOUND BY WEIGHT OF THE SODIUM CHLORIDE WITH SUFFICIENT WATER TO YIELD A SUBSTANTIALLY HOMOGENEOUS PASTE, DRYING THE PASTE, GRINDING THE DRIED MIXTURE INTO PARTICLES AT LEAST ABOUT 85% OF WHICH HAVE A SIZE PASSING A NO. 30 SCREEN, THOROUGHLY ADMIXING ABOUT 0.05 TO 2.0% OF A COHESIVE AGENT INTO THE GROUND MIXTURE, AND PRESSING THE RESULTING MIXTURE INTO TABLETS.
References Cited (Backward Citations)
US2868655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |