US2962361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous oxidation system for producing carboxylic acids
Assignee: Standard Oil Co
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Filing: 1957-08-12
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Granted: 1960-11-29
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Expires: 1977-08-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles A Spiller
- 👤 Richard H Baldwin
- 👤 Charles D Kalfadelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:42
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A CONTINUOUS COUNTERCURRENT OXIDATION SYSTEM WHICH COMPRISES A PLURALITY OF OXIDATION VESSELS, EACH VESSEL HAVING A VAPOR OUTLET LEADING FROM THE TOP THEREOF THROUGH A CONDENSER TO A RECEIVER AND A LINE FOR RETURNING LIQUID FROM THE RECEIVER BACK TO THE VESSEL, MEANS FOR INTRODUCING A CHARGING STOCK AT THE UPPER PART OF THE FIRST VESSEL, MEANS FOR PUMPING LIQUID FROM THE LOWER PART OF THE FIRST VESSEL TO THE UPPER PART OF THE SECOND VESSEL, MEANS FOR INTRODUCING AN OXYGEN-CONTAINING GAS AT THE BASE OF THE SECOND VESSEL, A LINE FOR RETURNING GAS FROM THE RECEIVER OF THE SECOND VESSEL TO THE LOWER PART OF THE FIRST VESSEL AND MEANS FOR VENTING GASES FROM THE RECEIVER OF THE FIRST VESSEL.
Claim 2
Dependent Claim
121 words
A CONTINUOUS COUNTERCURRENT OXIDATION SYSTEM WHICH COMPRISES A PLURALITY OF OXIDATION VESSELS, EACH VESSEL HAVING A VAPOR OUTLET LEADING FROM THE TOP THEREOF THROUGH A CONDENSER TO A RECEIVER AND A LINE FOR RETURNING LIQUID FROM THE RECEIVER BACK TO THE VESSEL, MEANS FOR INTRODUCING A CHARGING STOCK AT THE UPPER PART OF THE FIRST VESSEL, MEANS FOR PUMPING LIQUID FROM THE LOWER PART OF THE FIRST VESSEL TO THE UPPER PART OF THE SECOND VESSEL, MEANS FOR INTRODUCING AN OXYGEN-CONTAINING GAS AT THE BASE OF THE SECOND VESSEL, A LINE FOR RETURNING GAS FROM THE RECEIVER OF THE SECOND VESSEL TO THE LOWER PART OF THE FIRST VESSEL AND MEANS FOR VENTING GASES FROM THE RECEIVER OF THE FIRST VESSEL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |