US3409566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of grinding strong base ion exchange resins in the hydroxide form
Assignee: Union Tank Car Co
•
Filing: 1964-01-30
•
Granted: 1968-11-05
•
Expires: 1984-01-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Levendusky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:02
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/10; B01; B01J; B01J47/00; B01J47/016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF MAKING HYDROXIDE-FORM STRONG BASE, DIVINYLBENZENE-STYRENE COPOLYMER ANION EXCHANGE RESIN PARTICLES IN THE SIZE RANGE OF AOBUT 60 TO 400 MESH WHICH COMPRISES GRINDING IN A HAMMER MILL HYDROXIDE-FORM STRONG BASE, DIVINYLBENZENE-STYRENE COPOLYMER ANION EXCHANGE RESIN PARTICLES IN THE SIZE RANGE OF ABOUT 20 TO 50 MESH HAVING A FREE WATER CONTENT IN THE RANGE OF ABOUT 1.9 TO 7.6% BY WEIGHT OF SAID RESIN PARTICLES.
Claim 2
Independent Claim
68 words
THE METHOD OF MAKING HYDROXIDE-FORM STRONG BASE, DIVINYLBENZENE-STYRENE COPOLYMER ANION EXCHANGE RESIN PARTICLES IN THE SIZE RANGE OF AOBUT 60 TO 400 MESH WHICH COMPRISES GRINDING IN A HAMMER MILL HYDROXIDE-FORM STRONG BASE, DIVINYLBENZENE-STYRENE COPOLYMER ANION EXCHANGE RESIN PARTICLES IN THE SIZE RANGE OF ABOUT 20 TO 50 MESH HAVING A FREE WATER CONTENT IN THE RANGE OF ABOUT 1.9 TO 7.6% BY WEIGHT OF SAID RESIN PARTICLES.
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) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |