US3402105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packed fractionating tower
Assignee: Lummus Technology LLC
•
Filing: 1965-04-02
•
Granted: 1968-09-17
•
Expires: 1985-04-02
Abstract
No abstract record available.
Inventors
- 👤 Morgan C Sze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:24
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/32; B01D; B01D3/00; B01D3/14; B01D3/26; B01D3/28; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32296; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/905; Y10S62/906; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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CA576074A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |