US3433600A
Expired / Lapsed
US
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Apparatus for exothermic catalytic reactions
Assignee: Chemical Construction Corp
•
Filing: 1965-10-20
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Granted: 1969-03-18
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Axel Christensen
- 👤 Chi Sheng Kuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:23
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0005; B01J8/02; B01J8/04; B01J8/0446; B01J8/0449; B01J8/0453; B01J8/0492; C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0417; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US677670A
Cited
US1909378A
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US2512586A
Cited
US2632692A
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US3254967A
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US3366461A
Cited
US3353924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |