US3236367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion exchange resin column and method of stabilizing same
Assignee: Beckman Coulter Inc
•
Filing: 1961-08-21
•
Granted: 1966-02-22
•
Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 James A Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:05
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN IRON EXCHANGE RESIN COLUMN COMPRISING AN ELONGATED CYLINDRICAL TUBE HAVING A CLOSURE AT ONE END AND OPEN AT ITS OTHER END, RESINOUS PARTICULATE MATERIAL PACKED IN SAID COLUMN, HIGH MOLECULAR WEIGHT ANTIFREEZE MIXTURE CONTAINING A GLYCOL DISPOSED WITHIN SAID COLUMN AND FILLING THE INTERSTICES BETWEEN SAID PARTICLES TO PREVENT FREEZING OF THE SAME AND A YIELDABLE, POROUS CHEMICALLY INERT PLUG AT THE OPEN END OF SAID COLUMN TO YIELDABLY HOLD THE RESINOUS MATERIAL IN THE COLUMN WHILE PERMITTING SAID ANTIFREEZE TO PERMEATE THE PLUG ON EITHER SIDE THEREOF, AND PERMITTING THERMAL CONTRACTION AND EXPANSION OF THE COLUMN, AND IMPERVIOUS STOPPER MEANS CLOSING THE OPEN END OF THE TUBE.
Claim 2
Dependent Claim
109 words
AN IRON EXCHANGE RESIN COLUMN COMPRISING AN ELONGATED CYLINDRICAL TUBE HAVING A CLOSURE AT ONE END AND OPEN AT ITS OTHER END, RESINOUS PARTICULATE MATERIAL PACKED IN SAID COLUMN, HIGH MOLECULAR WEIGHT ANTIFREEZE MIXTURE CONTAINING A GLYCOL DISPOSED WITHIN SAID COLUMN AND FILLING THE INTERSTICES BETWEEN SAID PARTICLES TO PREVENT FREEZING OF THE SAME AND A YIELDABLE, POROUS CHEMICALLY INERT PLUG AT THE OPEN END OF SAID COLUMN TO YIELDABLY HOLD THE RESINOUS MATERIAL IN THE COLUMN WHILE PERMITTING SAID ANTIFREEZE TO PERMEATE THE PLUG ON EITHER SIDE THEREOF, AND PERMITTING THERMAL CONTRACTION AND EXPANSION OF THE COLUMN, AND IMPERVIOUS STOPPER MEANS CLOSING THE OPEN END OF THE TUBE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |