US3366461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for exothermic catalytic reactions
Assignee: Chemical Construction Corp
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Filing: 1964-05-11
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Granted: 1968-01-30
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Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Christensen Axel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:06
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0005; B01J8/02; B01J8/0285; B01J8/04; B01J8/0446; B01J8/0461; B01J8/0469; B01J8/0492; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00168; B01J2208/00194; B01J2208/00212; B01J2208/00221; B01J2208/00477; B01J2208/00495; B01J2208/0053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1689684A
Cited
US2512586A
Cited
US3041151A
Cited
FR1274228A
Cited
US3144312A
Cited
US3254967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |