Patent US2540223A successfully refreshed from Google Patents.
US2540223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sterilization of liquids
Assignee: Individual
•
Filing: 1946-07-19
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Granted: 1951-02-06
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Expires: 1966-07-19
Abstract
No abstract record available.
Inventors
- 👤 John A Tolman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:49
CPC Classifications
A; A23; A23B; A23B11/00; A23B11/10; A23B2/00; A23B2/60; C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C02F1/46109; C02F1/46114; C02F2303/00; C02F2303/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD OF TREEATING LIQUIDS TO DESTROY BACTERIA SUSPENDED THEREIN WHICH COMPRISES FLOWING THE LIQUID WHILE IN CONTACT WITH A SOLID POROUS CURRENT-CONDUCTING BODY PROVIDING A CONTINUOUS ELECTRIC PATH THROUGH WHICH A DIRECT ELECTRIC CURRENT IS PASSED AND MAINTAINING A VERY LARGE AREA OF INTERFACIAL CONTACT BETWEEN THE LIQUID AND SAID BODY AS COMPARED WITH THE VOLUME OF LIQUID UNDER TREATMENT AT A GIVEN MOMENT, THE AVERAGE DENSITY OF SAID CURRENT BEING OF THE ORDER OF 1 MILLIAMPERE PER SQUARE INCH.
Claim 2
Independent Claim
81 words
A METHOD OF TREEATING LIQUIDS TO DESTROY BACTERIA SUSPENDED THEREIN WHICH COMPRISES FLOWING THE LIQUID WHILE IN CONTACT WITH A SOLID POROUS CURRENT-CONDUCTING BODY PROVIDING A CONTINUOUS ELECTRIC PATH THROUGH WHICH A DIRECT ELECTRIC CURRENT IS PASSED AND MAINTAINING A VERY LARGE AREA OF INTERFACIAL CONTACT BETWEEN THE LIQUID AND SAID BODY AS COMPARED WITH THE VOLUME OF LIQUID UNDER TREATMENT AT A GIVEN MOMENT, THE AVERAGE DENSITY OF SAID CURRENT BEING OF THE ORDER OF 1 MILLIAMPERE PER SQUARE INCH.
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) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |