Patent US3205184A successfully refreshed from Google Patents.
US3205184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making composite ion exchange resin bodies
Assignee: Dow Chemical Co
•
Filing: 1962-03-12
•
Granted: 1965-09-07
•
Expires: 1982-03-12
Abstract
No abstract record available.
Inventors
- 👤 Melvin J Hatch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:45
CPC Classifications
B; B01; B01J; B01J43/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A METHOD OF INSOLUBILIZING AN IONIZABLE ORGANIC RESIN THAT NORMALLY IS SOLUBLE IN AQUEOUS MEDIA SO AS TO RENDER IT EFFECTIVE FOR USE AS AN ION EXCHANGER IN ION EXCHANGE PROCESSES, WHICH METHOD COMPRRISES FORMING A LIQUID SOLUTION OF: (1) SAID IONIZABLE ORGANIC POLYMER, AND (2) AN ORGANIC MATERIAL THAT IS POLYMERIZABLE TO FORM A SOLID, INSOLUBLE, CROSS-LINKED POLYMER DISTINCT FROM THE IONIZABLE ORGANIC POLYMER EMPLOYED AS A STARTING MATERIAL AND POLYMERIZING THE POLYMERIZABLE ORGANIC MATERIAL PRESENT IN THE SOLUTION, WHEREBY THERE IS FORMED A SOLID, INSOLUBLE, COMPOSITE ION EXCHANGE RESIN BODY COMPRISING, THROUGHOUT A SINGLE PIECE THEREOF, AN INTIMATE MIXTURE OF THE NORMALLY SOLUBLE, IONIZABLE RESIN STARTING MATERIAL AND THE SOLID, INSOLUBLE, CROSS-LINKED RESIN RESULTING FROM THE POLYMERIZATION.
Claim 2
Independent Claim
119 words
A METHOD OF INSOLUBILIZING AN IONIZABLE ORGANIC RESIN THAT NORMALLY IS SOLUBLE IN AQUEOUS MEDIA SO AS TO RENDER IT EFFECTIVE FOR USE AS AN ION EXCHANGER IN ION EXCHANGE PROCESSES, WHICH METHOD COMPRRISES FORMING A LIQUID SOLUTION OF: (1) SAID IONIZABLE ORGANIC POLYMER, AND (2) AN ORGANIC MATERIAL THAT IS POLYMERIZABLE TO FORM A SOLID, INSOLUBLE, CROSS-LINKED POLYMER DISTINCT FROM THE IONIZABLE ORGANIC POLYMER EMPLOYED AS A STARTING MATERIAL AND POLYMERIZING THE POLYMERIZABLE ORGANIC MATERIAL PRESENT IN THE SOLUTION, WHEREBY THERE IS FORMED A SOLID, INSOLUBLE, COMPOSITE ION EXCHANGE RESIN BODY COMPRISING, THROUGHOUT A SINGLE PIECE THEREOF, AN INTIMATE MIXTURE OF THE NORMALLY SOLUBLE, IONIZABLE RESIN STARTING MATERIAL AND THE SOLID, INSOLUBLE, CROSS-LINKED RESIN RESULTING FROM THE POLYMERIZATION.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |