US2235644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for effecting chemical reactions involving a melt and a gaslike body
Assignee: Individual
•
Filing: 1937-03-09
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Granted: 1941-03-18
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Expires: 1957-03-09
Abstract
No abstract record available.
Inventors
- 👤 Richardson Edward Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:54
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/002; B; B01; B01J; B01J10/00; B01J10/005; B01J10/02; B01J2219/00; B01J2219/00761; B01J2219/00763; B01J2219/00765; B01J2219/0077; B01J2219/00772; Y; Y10; Y10S; Y10S48/00; Y10S48/05
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) | 1944-03-17 | 1944-09-16 | 1945-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-17 | 1948-09-16 | 1949-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-17 | 1952-09-16 | 1953-03-18 | $7700.00 | Window Closed / Lapsed |