Patent US2800506A successfully refreshed from Google Patents.
US2800506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aliphatic acids
Assignee: Distillers Co Yeast Ltd
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Filing: 1954-04-13
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Granted: 1957-07-23
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Expires: 1974-04-13
Abstract
No abstract record available.
Inventors
- 👤 Millidge Alfred Frank
- 👤 Robson Ian Kenneth Miles
- 👤 Elce Alec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:23
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A CONTINUOUS PROCESS FOR THE PRODUCTION OF ALIPHATIC ACIDS WHICH COMPRISES OXIDISING IN THE LIQUID PHASE A PARAFFIN HYDROCARBON OF FOUR TO EIGHT CARBON ATOMS WITH MOLECULAR OXYGEN TO PRODUCE LOWER ALIPHATIC ACIDS, SEPARATING AT LEAST PART OF THE OXIDATION PRODUCT CONTAINING ALIPHATIC ACIDS OF ONE TO FOUR CARBON ATOMS AND A HIGH-BOILING RESIDUE HAVING A BOILING POINT OF AT LEAST 170*C., DISTILLING SAID SEPARATED OXIDATION PRODUCT TO SEPARATE AND RECOVER SAID ACIDS FROM THE HIGH-BOILING RESIDUES, RETURNING SUBSTANTIALLY ALL OF THE RESULTING RESIDUES AND ADMIXING SAME WITH THE SUPPLY OF PARAFFIN HYDROCARBON TO THE OXIDATION ZONE,AND OXIDISING SAID RESIDUES IN THE LIQUID PHASE TO PRODUCE FURTHER ALIPHATIC ACIDS OF ONE TO FOUR CARBON ATOMS.
Claim 2
Dependent Claim
115 words
A CONTINUOUS PROCESS FOR THE PRODUCTION OF ALIPHATIC ACIDS WHICH COMPRISES OXIDISING IN THE LIQUID PHASE A PARAFFIN HYDROCARBON OF FOUR TO EIGHT CARBON ATOMS WITH MOLECULAR OXYGEN TO PRODUCE LOWER ALIPHATIC ACIDS, SEPARATING AT LEAST PART OF THE OXIDATION PRODUCT CONTAINING ALIPHATIC ACIDS OF ONE TO FOUR CARBON ATOMS AND A HIGH-BOILING RESIDUE HAVING A BOILING POINT OF AT LEAST 170*C., DISTILLING SAID SEPARATED OXIDATION PRODUCT TO SEPARATE AND RECOVER SAID ACIDS FROM THE HIGH-BOILING RESIDUES, RETURNING SUBSTANTIALLY ALL OF THE RESULTING RESIDUES AND ADMIXING SAME WITH THE SUPPLY OF PARAFFIN HYDROCARBON TO THE OXIDATION ZONE,AND OXIDISING SAID RESIDUES IN THE LIQUID PHASE TO PRODUCE FURTHER ALIPHATIC ACIDS OF ONE TO FOUR CARBON ATOMS.
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) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |