US3223490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst loader and method of filling tubes
Assignee: Houston Chemical Corp
•
Filing: 1962-02-09
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Granted: 1965-12-14
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Expires: 1982-02-09
Abstract
No abstract record available.
Inventors
- 👤 Donald K Sacken
- 👤 Thomas R Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:43
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/06; B01J8/0015; B01J8/003; B01J8/008; B01J2208/00; B01J2208/00743; B01J2208/00752
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
IN AN ARRANGEMENT FOR LOADING WITH GRANULES A MULTIPLICITY OF ELONGATED REACTOR TUBES THAT ARE SUBJECT TO BEING UNDESIRABLY BRIDGED BY THE GRANULES, THE IMPROVEMENT COMPRISING: A PLATE HAVING DEPENDING FROM RESPECTIVE SPACED APERTURES THEREIN A CORRESPONDING MULTIPLICITY OF FILL TUBES OF SUCH PREDETERMINED LENGTH AND OUTER DIAMETER AS TO EXTEND INSIDE SAID ELONGATED TUBES RESPECTIVELY A PREDETERMINED DISTANCE WHICH IS SUBSTANTIALLY LESS
References Cited (Backward Citations)
US518973A
Cited
US1488603A
Cited
US1848346A
Cited
US2655273A
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US2706072A
Cited
US2784746A
Cited
US3148037A
Cited
US2976757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |