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Patent US2698341A successfully refreshed from Google Patents.
US2698341A
Expired / Lapsed
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Acidolysis of methylal with carboxylic acid anhydroides
Assignee: Cities Service Research and Development Co
•
Filing: 1951-08-17
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Granted: 1954-12-28
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Expires: 1971-08-17
Abstract
No abstract record available.
Inventors
- 👤 Richard D Kleene
- 👤 William B Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:52
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/02; C07C69/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
THE PROCESS OF SYNTHESIZING METHOXYMETHYL ESTERS COMPRISING REACTING METHYLAL AND ANALIPHATIC ACID ANHYDRIDE UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AND AT REFLUX TEMPERATURES IN THE PRESENCE OF A TRACE OF ACID CATALYST, AND RECOVERING A METHOXYMETHYL ESTER FROM THE REACTION PRODUCTS.
Claim 2
Dependent Claim
39 words
THE PROCESS OF SYNTHESIZING METHOXYMETHYL ESTERS COMPRISING REACTING METHYLAL AND ANALIPHATIC ACID ANHYDRIDE UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AND AT REFLUX TEMPERATURES IN THE PRESENCE OF A TRACE OF ACID CATALYST, AND RECOVERING A METHOXYMETHYL ESTER FROM THE REACTION PRODUCTS.
References Cited (Backward Citations)
US2416024A
Cited
US2423783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |