Patent US2524219A successfully refreshed from Google Patents.
US2524219A
Expired / Lapsed
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Germicidally active deionizing agents for alkaline ph solutions
Assignee: Individual
•
Filing: 1947-09-16
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Granted: 1950-10-03
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Expires: 1967-09-16
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Bersworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:01
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/001; Y; Y10; Y10S; Y10S424/00; Y10S424/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A BACTERICIDALLY ACTIVE DEIONIZING AGENT FOR AQUEOUS SOLUTIONS, SAID AGENT CONSISTING OF A CHEMICAL COMPOUND CONSISTING OF ETHYLENE DIAMINE TETRAACETIC ACID HAVING AT LEAST ONE OF THE CARBOXYLIC GROUPS NEUTRALIZED BY A BASIC BACTERICIDALLY ACTIVE QUATERNARY AMMONIUM ION AND THE REMAINING CARBOXYLIC GROUPS NEUTRALIZED BY ALKALI METAL IONS.
Claim 2
Dependent Claim
48 words
A BACTERICIDALLY ACTIVE DEIONIZING AGENT FOR AQUEOUS SOLUTIONS, SAID AGENT CONSISTING OF A CHEMICAL COMPOUND CONSISTING OF ETHYLENE DIAMINE TETRAACETIC ACID HAVING AT LEAST ONE OF THE CARBOXYLIC GROUPS NEUTRALIZED BY A BASIC BACTERICIDALLY ACTIVE QUATERNARY AMMONIUM ION AND THE REMAINING CARBOXYLIC GROUPS NEUTRALIZED BY ALKALI METAL IONS.
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) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |