Patent US2925435A successfully refreshed from Google Patents.
US2925435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing monobromacetic acid and derivatives thereof
Assignee: Individual
•
Filing: 1957-05-16
•
Granted: 1960-02-16
•
Expires: 1977-05-16
Abstract
No abstract record available.
Inventors
- 👤 Schwerdle Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:45
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/347; C07C51/363
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
IN A PROCESS FOR THE PREPARATION OF A MONOBROMACETIC ACID ESTER OF AN ALCOHOL BY REACTING OF MIXTURE OF MONOBROMACETIC ACID AND MONOBROMACETYL BROMIDE WITH AT LEAST SUFFICIENT ALCOHOL TO CONVERT SAID MONOBROMACETIC ACID AND MONOBROMACETYL BROMIDE TO A MONOBROMACETIC ACID ESTER OF SAID ALCOHOL, THE STEP WHICH COMPRISES PREPARING SAID MIXTURE OF MONOBROMACETIC ACID AND MONOBROMACETYL BROMIDE BY THE METHOD WHICH INCLUDES BROMINATING ACETIC ANHYDRIDE CONTAING LESS THAN 5% ACETIC ACID AT A TEMPERATURE FROM ABOUT 70*C. TO ABOUT 135*C. WITH AT LEAST ABOUT TWO MOLS OF BROMINE FOR EACH MOLE OF ACETIC ANHYDRIDE.
References Cited (Backward Citations)
US2539238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |