US2458261A
Expired / Lapsed
US
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Process and apparatus for effecting chemical reactions
Assignee: Infilco Inc
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Filing: 1947-04-26
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Granted: 1949-01-04
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Expires: 1967-04-26
Abstract
No abstract record available.
Inventors
- 👤 Walter H Green
- 👤 George A Mcbride
- 👤 George A Hertzing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:10
CPC Classifications
C; C01; C01F; C01F5/00; B; B01; B01D; B01D9/00; B01D9/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |