Patent US3235488A successfully refreshed from Google Patents.
US3235488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Restoration of fouled particles
Assignee: Union Tank Car Co
•
Filing: 1962-10-08
•
Granted: 1966-02-15
•
Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Levendusky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:02
CPC Classifications
B; B01; B01J; B01J49/00; B01J49/60; B01J49/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE METHOD OF RESTORING FOULED ANION EXCHANGE RESIN PARTICLES COMPRISING: (A) PREPARING A SLURRY OF SAID RESIN PARTICLES, (B) INTRODUCING SAID SLURRY INTO A CONFINED SPACE, AND (C) VIOLENTLY AGITATING SAID SLURRY WITHIN SAID CONFINED SPACE AT A SUFFICIENT VELOCITY AND FOR A SUFFICIENT TIME TO CAUSE ABRASION OF SAID RESIN PARTICLES WHILE SUBSTANTIALLY MAINTAINING THE ORIGINAL PARTICLE SIZE OF SAID RESIN PARTICLES WHEREBY CONTAMINATION IS REMOVED FROM SAID RESIN PARTICLES WITHOUT APPRECIABLE BREAKDOWN THEREOF.
Claim 2
Independent Claim
75 words
THE METHOD OF RESTORING FOULED ANION EXCHANGE RESIN PARTICLES COMPRISING: (A) PREPARING A SLURRY OF SAID RESIN PARTICLES, (B) INTRODUCING SAID SLURRY INTO A CONFINED SPACE, AND (C) VIOLENTLY AGITATING SAID SLURRY WITHIN SAID CONFINED SPACE AT A SUFFICIENT VELOCITY AND FOR A SUFFICIENT TIME TO CAUSE ABRASION OF SAID RESIN PARTICLES WHILE SUBSTANTIALLY MAINTAINING THE ORIGINAL PARTICLE SIZE OF SAID RESIN PARTICLES WHEREBY CONTAMINATION IS REMOVED FROM SAID RESIN PARTICLES WITHOUT APPRECIABLE BREAKDOWN THEREOF.
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |