Patent US2533003A successfully refreshed from Google Patents.
US2533003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-methyl-3-piperidylmethyl 3-hydroxy-2-phenylbutanoate, its salts and production thereof
Assignee: STWB Inc
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Filing: 1949-10-29
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Granted: 1950-12-05
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Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 Rolland F Feldkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:22
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/18; C07D211/20; C07D211/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1-METHYL-3-PIPERIDYLMETHYL 3-HYDROXY2-PHENYLBUTANOATE HAVING THE FORMULA
Claim 2
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1-METHYL-3-PIPERIDYLMETHYL 3-HYDROXY2-PHENYLBUTANOATE HAVING 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) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |