US3324010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Employing overhead as reboil heat with flow control
Assignee: Phillips Petroleum Co
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Filing: 1963-09-30
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Granted: 1967-06-06
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Robert D Bauer
- 👤 John L Ledbetter
- 👤 George R Hettick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:27
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/4227; C; C07; C07C; C07C7/00; C07C7/04; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
IN THE METHOD OF HEAT EXCHANGING THE LOWER PORTION OF A FIRST SEPARATION COLUMN WITH THE OVERHEAD VAPOR OF A SECOND SEPARATION COLUMN WHEREIN SAID OVERHEAD VAPOR IS CONDENSED IN A REBOILER ASSOCIATED WITH SAID FIRST COLUMN AND RETURNED TO SAID SECOND COLUMN, THE IMPROVEMENT COMPRISING: CONTROLLING THE FLOW OF SAID OVERHEAD VAPOR TO SAID FIRST
Claim 2
Dependent Claim
56 words
IN THE METHOD OF HEAT EXCHANGING THE LOWER PORTION OF A FIRST SEPARATION COLUMN WITH THE OVERHEAD VAPOR OF A SECOND SEPARATION COLUMN WHEREIN SAID OVERHEAD VAPOR IS CONDENSED IN A REBOILER ASSOCIATED WITH SAID FIRST COLUMN AND RETURNED TO SAID SECOND COLUMN, THE IMPROVEMENT COMPRISING: CONTROLLING THE FLOW OF SAID OVERHEAD VAPOR TO SAID FIRST
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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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |