US2610206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of methyl lactate
Assignee: Distillers Co Yeast Ltd
•
Filing: 1949-10-01
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Granted: 1952-09-09
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Expires: 1969-10-01
Abstract
No abstract record available.
Inventors
- 👤 Highet Hugh Campbell
- 👤 Salt Francis Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:58
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/66; C07C69/67; C07C69/675; C07C69/68; C07C67/00; C07C67/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
PROCESS FOR THE MANUFACTURE OF METHYL LACTATE WHICH COMPRISES HEATING LACTIC ACID CONTAINING 2 TO 5% OF WATER, AND METHANOL AT A TEMPERATURE BETWEEN 180* AND 235*C. AND AT A PRESSURE SUFFICIENT TO KEEP A MAJOR PART OF THE METHANOL IN THE LIQUID PHASE AND MAINTAINING THE REACTION MIXTURE AT SAID TEMPERATURE FOR BETWEEN ABOUT 30 TO 60 MINUTES.
Claim 2
Dependent Claim
59 words
PROCESS FOR THE MANUFACTURE OF METHYL LACTATE WHICH COMPRISES HEATING LACTIC ACID CONTAINING 2 TO 5% OF WATER, AND METHANOL AT A TEMPERATURE BETWEEN 180* AND 235*C. AND AT A PRESSURE SUFFICIENT TO KEEP A MAJOR PART OF THE METHANOL IN THE LIQUID PHASE AND MAINTAINING THE REACTION MIXTURE AT SAID TEMPERATURE FOR BETWEEN ABOUT 30 TO 60 MINUTES.
References Cited (Backward Citations)
US2331094A
Cited
US2405646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |