US2352791A
Expired / Lapsed
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Magnetic field control of heterogeneous catalysts
Assignee: Individual
•
Filing: 1940-08-07
•
Granted: 1944-07-04
•
Expires: 1960-08-07
Abstract
No abstract record available.
Inventors
- 👤 Orus F Krumboltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:52
CPC Classifications
C; C11; C11C; C11C3/00; C11C3/12; B; B01; B01J; B01J19/00; B01J19/08; B01J19/087; B01J8/00; B01J8/001; C01; C01B; C01B13/00; C01B13/02; C01B6/00; C10; C10G; C10G15/00; B01J2219/00; B01J2219/08; B01J2219/0803; B01J2219/085; B01J2219/0852; B01J2219/0854; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/16
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) | 1947-07-04 | 1948-01-03 | 1948-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-07-04 | 1952-01-03 | 1952-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-07-04 | 1956-01-03 | 1956-07-04 | $7700.00 | Window Closed / Lapsed |