Patent US2861102A successfully refreshed from Google Patents.
US2861102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous process for producing alpha ethylcinnamic acid
Assignee: Dow Chemical Co
•
Filing: 1956-08-30
•
Granted: 1958-11-18
•
Expires: 1976-08-30
Abstract
No abstract record available.
Inventors
- 👤 James E Huff
- 👤 Rodney D Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:58
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A CONTINUOUS PROCESS COMPRISING INTIMATELY AND CONTINUOUSLY MIXING IN A REACTION ZONE THE REAGENTS (A) ONE MOLECULAR EQUIVALENT OF 3-BENZYLIDENE-2-PENTANONE AND (B) AT LEAST ABOUT 4 MOLECULAR EQUIVALENTS OF AN AQUEOUS SOLUTION OF AN ALKALINE HYPOCHLORITE OF AT LEAST ABOUT 15% CONCENTRATION BY WEIGHT AND A PH OF AT LEAST ABOUT 12 AND A FEED TEMPERATURE NOT HIGHER THAN ABOUT 15* C.; MAINTAINING THE TEMPERATURE IN THE REACTION ZONE AT ABOUT 80 TO 100* C.; CONTINUOUSLY WITHDRAWING THE THUS FORMED PRODUCT SOLUTION AND ISOLATING THEREFROM A MEMBER OF THE GROUP CONSISTING OF A-ETHYLCINNAMIC ACID AND ITS SALTS.
Claim 2
Dependent Claim
97 words
A CONTINUOUS PROCESS COMPRISING INTIMATELY AND CONTINUOUSLY MIXING IN A REACTION ZONE THE REAGENTS (A) ONE MOLECULAR EQUIVALENT OF 3-BENZYLIDENE-2-PENTANONE AND (B) AT LEAST ABOUT 4 MOLECULAR EQUIVALENTS OF AN AQUEOUS SOLUTION OF AN ALKALINE HYPOCHLORITE OF AT LEAST ABOUT 15% CONCENTRATION BY WEIGHT AND A PH OF AT LEAST ABOUT 12 AND A FEED TEMPERATURE NOT HIGHER THAN ABOUT 15* C.; MAINTAINING THE TEMPERATURE IN THE REACTION ZONE AT ABOUT 80 TO 100* C.; CONTINUOUSLY WITHDRAWING THE THUS FORMED PRODUCT SOLUTION AND ISOLATING THEREFROM A MEMBER OF THE GROUP CONSISTING OF A-ETHYLCINNAMIC ACID AND ITS SALTS.
References Cited (Backward Citations)
US276888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |