US2217263A
Expired / Lapsed
US
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Process for conducting exothermic reactions
Assignee: Shell Development Co
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Filing: 1939-05-02
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Granted: 1940-10-08
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Expires: 1959-05-02
Abstract
No abstract record available.
Inventors
- 👤 Waterman Hein Israel
- 👤 Leendertse Jacob Jan
- 👤 Kok Willem Johannes Corneli De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:20
CPC Classifications
F; F28; F28D; F28D3/00; B; B01; B01F; B01F23/00; B01F23/40; B01F23/45; B01F23/452; B01J; B01J10/00; B01J10/02; B01J19/00; B01J19/0006; B01J19/0013; C; C07; C07B; C07B43/00; C07B43/02; C07C; C07C201/00; C07C201/06; C07C201/08; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00054; B01J2219/00056; B01J2219/00058; B01J2219/00074; B01J2219/00087; B01J2219/00099; B01J2219/0015; B01J2219/00153; B01J2219/00159; B01J2219/00162; B01J2219/00168
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) | 1943-10-08 | 1944-04-08 | 1944-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-08 | 1948-04-08 | 1948-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-08 | 1952-04-08 | 1952-10-08 | $7700.00 | Window Closed / Lapsed |