US2375336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor and liquid contacting apparatus
Assignee: Standard Oil Co
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Filing: 1943-03-17
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Granted: 1945-05-08
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Expires: 1963-03-17
Abstract
No abstract record available.
Inventors
- 👤 Alfred W Weitkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:34
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/32; B01J19/30; B01J2219/00; B01J2219/30; B01J2219/302; B01J2219/30226; B01J2219/30257; B01J2219/30296; B01J2219/304; B01J2219/30408; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/3221; B01J2219/324; B01J2219/32408; Y; Y10; Y10S; Y10S261/00; Y10S261/72
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) | 1948-05-07 | 1948-11-06 | 1949-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-05-07 | 1952-11-06 | 1953-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-05-07 | 1956-11-06 | 1957-05-08 | $7700.00 | Window Closed / Lapsed |