US3250702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for purifying liquids and particulate ion exchange material used therefor
Assignee: Union Tank Car Co
•
Filing: 1963-03-08
•
Granted: 1966-05-10
•
Expires: 1983-03-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Levendusky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:49
CPC Classifications
C; C13; C13B; C13B20/00; C13B20/14; C13B20/142; B; B01; B01J; B01J47/00; B01J47/02; B01J47/04; B01J47/12; B01J47/133; C07; C07C; C07C45/00; C07C45/78; C07C45/79; C12; C12H; C12H1/00; C12H1/02; C12H1/04; C12H1/0432
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A METHOD FOR REMOVING IMPURITIES FROM A LIQUID WHICH COMPRISES PASSING SAID LIQUID THROUGH A BED COMPRISING A MIXTURE OF ANION AND CATION EXCHANGE RESIN PARTICLES, SAID RESIN PARTICLES BEING IN THE SIZE RANGE OF 60 TO 400 MESH, SAID CATION RESIN PARTICLES COMPRISING IN THE RANGE OF ABOUT 5 TO 95% BY WEIGHT OF SAID RESIN PARTICLES IN SAID MIXTURE, A MAJOR PORTION OF SAID RESIN PARTICLES ON A WEIGHT BASIS BEING IN THE SIZE RANGE OF 100 TO 400 MESH.
References Cited (Backward Citations)
US1604651A
Cited
US2798674A
Cited
US2961417A
Cited
US3168486A
Cited
US3014896A
Cited
US3128247A
Cited
US3163597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |