Patent US2516611A successfully refreshed from Google Patents.
US2516611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aromatic-oxyaliphatic carboxylates
Assignee: Dow Chemical Co
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Filing: 1946-06-12
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Granted: 1950-07-25
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Expires: 1966-06-12
Abstract
No abstract record available.
Inventors
- 👤 Luther F Berhenke
- 👤 Louis E Begin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:18
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/12; C07C51/00; C07C51/347; C07C51/373; C07C59/00; C07C59/40; C07C59/58; C07C59/64; C07C59/66; C07C59/68; C07C59/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A METHOD OF MAKING A SALT OF AN AROMATICOXY-ALIPHATIC ACID BY A REACTION BETWEEN SALTS OF A CHLOROALIPHATIC ACID AND A PHENOL, THE STEPS OF FORMING AN AQUEOUS SOLUTION OF A PHEOL, A WATER-SOLUBLE SALT OF A MONOCHLOROALIPHATIC MONOCARBOXYLIC ACID, AND AN ALKALI, WHICH SOLUTION INITIALLY CONTAINS AN ALKALI IN AMOUNT CHEMICALLY EQUIVALENT TO BETWEEN 80 AND 100 PER CENT OF THE PHENOL AND IS OF A PH VALUE WITHIN A RANGE CORRESPONDING TO THE PRESENCE OF ALKALI IN THE PROPORTIONS JUST STATED, HEATING THE MIXTURE TO A REACTION TEMPERATURE, AND ADDING ALKALI AS NECESSARY TO MAINTAIN THE MIXTURE WITHIN SAID RANGE OF PH VALUES THROUGHOUT THE MAJOR PART OF THE REACTION.
Claim 2
Dependent Claim
113 words
IN A METHOD OF MAKING A SALT OF AN AROMATICOXY-ALIPHATIC ACID BY A REACTION BETWEEN SALTS OF A CHLOROALIPHATIC ACID AND A PHENOL, THE STEPS OF FORMING AN AQUEOUS SOLUTION OF A PHEOL, A WATER-SOLUBLE SALT OF A MONOCHLOROALIPHATIC MONOCARBOXYLIC ACID, AND AN ALKALI, WHICH SOLUTION INITIALLY CONTAINS AN ALKALI IN AMOUNT CHEMICALLY EQUIVALENT TO BETWEEN 80 AND 100 PER CENT OF THE PHENOL AND IS OF A PH VALUE WITHIN A RANGE CORRESPONDING TO THE PRESENCE OF ALKALI IN THE PROPORTIONS JUST STATED, HEATING THE MIXTURE TO A REACTION TEMPERATURE, AND ADDING ALKALI AS NECESSARY TO MAINTAIN THE MIXTURE WITHIN SAID RANGE OF PH VALUES THROUGHOUT THE MAJOR PART OF THE REACTION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-24 | 1954-01-23 | 1954-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-24 | 1958-01-23 | 1958-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-24 | 1962-01-23 | 1962-07-25 | $7700.00 | Window Closed / Lapsed |