US2692855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for sterilizing liquids
Assignee: Veolia WTS Systems USA Inc
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Filing: 1951-04-05
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Granted: 1954-10-26
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Expires: 1971-04-05
Abstract
No abstract record available.
Inventors
- 👤 Juda Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:52
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/54; C07C51/573; B; B01; B01J; B01J39/00; B01J39/04; C02; C02F; C02F1/00; C02F1/50; C02F1/505; C07C51/42; C07C51/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
THE METHOD OF PREPARING SUBSTANTIALLY DEMINERALIZED AND STERILE LIQUIDS COMPRISING SUBSTANTIALLY DIMENERALIZING THE LIQUID BY MEANS OF A HYDROGEN EXCHANGER AND A HYDROXYL EXCHANGER TO EXTENT OF LESS THAN 50 P. P. M. DISSOLVED IONIZED SUBSTANCES AND SUBSEQUENTLY CONTACTING THE LIQUID WITH A CATION EXCHANGER IN THE SILVER FORM.
Claim 2
Independent Claim
49 words
THE METHOD OF PREPARING SUBSTANTIALLY DEMINERALIZED AND STERILE LIQUIDS COMPRISING SUBSTANTIALLY DIMENERALIZING THE LIQUID BY MEANS OF A HYDROGEN EXCHANGER AND A HYDROXYL EXCHANGER TO EXTENT OF LESS THAN 50 P. P. M. DISSOLVED IONIZED SUBSTANCES AND SUBSEQUENTLY CONTACTING THE LIQUID WITH A CATION EXCHANGER IN THE SILVER FORM.
References Cited (Backward Citations)
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Cited
US2167225A
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US2404367A
Cited
US2434190A
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GB569661A
Cited
US2512053A
Cited
US2525497A
Cited
US2600719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-25 | 1958-04-26 | 1958-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-25 | 1962-04-26 | 1962-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-25 | 1966-04-26 | 1966-10-26 | $7700.00 | Window Closed / Lapsed |