US2535832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of novel esters of betahydroxy carboxylic acids by the reaction of beta-lactiones with chlorophenols
Assignee: Goodrich Corp
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Filing: 1949-04-18
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Granted: 1950-12-26
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Expires: 1969-04-18
Abstract
No abstract record available.
Inventors
- 👤 Warren L Beears
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:01
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/03; C07C17/00; C07C17/26; C07C17/32; C07C69/00; C07C69/66; C07C69/67; C07C69/675
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
THE METHOD WHICH COMPRISES REACTING A CHLOROPHENOL WITH A BETA-LACTONE OF THE FORMULA
Claim 2
Independent Claim
13 words
THE METHOD WHICH COMPRISES REACTING A CHLOROPHENOL WITH A BETA-LACTONE OF THE FORMULA
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) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |