US2571271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sterilization of ion exchange bodies
Assignee: US Filter Wallace and Tiernan Inc
•
Filing: 1948-01-20
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Granted: 1951-10-16
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Expires: 1968-01-20
Abstract
No abstract record available.
Inventors
- 👤 Marks Henry Clay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:56
CPC Classifications
B; B01; B01J; B01J49/00; B01J49/60
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
A METHOD OF STERILIZING A BODY OF ORGANIC ION EXCHANGE MATERIAL, COMPRISING TREATING SAID MATERIAL WITH AN AQUEOUS SOLUTION OF CHLOROMELAMINE CONTAINING NOT MORE THAN FOUR ACTIVE CHLORINE ATOMS FOR EACH MELAMINE GROUP, THE QUANTITY OF SUCH SOLUTION BEING NOT LESS THAN QUANFIVE GALLONS PER CUBIC FOOT OF ION EXCHANGE MATERIAL AND SAID CHLOROMELAMINE BEING PRESENT IN A QUANTITY PROVIDING FROM ABOUT 10 TO 200 P. P. M. AVAILABLE CHLORINE
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) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |