US2605282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of beta-(3, 4-dihydroxyphenyl)-alanine
Assignee: Dow Chemical Co
•
Filing: 1949-02-18
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Granted: 1952-07-29
•
Expires: 1969-02-18
Abstract
No abstract record available.
Inventors
- 👤 Edgar C Britton
- 👤 Halbert C White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:19
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/96
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2176018A
Cited
CH257403A
Cited
US2446192A
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US2480644A
Cited
US2527366A
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US2468352A
Cited
US2498300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |