Patent US3786160A successfully refreshed from Google Patents.
US3786160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of 2-hydroxymethyl-3-hydroxy-6-(1-hydroxy-2-aminoethyl)-pyridines as bronchodilators
Assignee: Pfizer Inc
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Filing: 1972-05-25
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Granted: 1974-01-15
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Expires: 1992-05-25
Abstract
Abstract 2-HYDROXYMETHYL - 3 - HYDROXY - 6 - (1-HYDROXY-2AMINOETHYL)PYRIDINES AND SALTS THEREOF, A NOVEL CLASS OF B-ADRENERGIC AGONIST BRONCHODILATORS IN MAMMALS, AND 2HYDROXYMETHYL - 3 - BENZYLOXY - 6 - PYRIDINECARBOXALDEHYDE, A VALUABLE INTERMEDIATE IN THE PREATION OF THE SUBJECT COMPOUNDS.
Inventors
- 👤 W Barth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:59
CPC Classifications
C; C07; C07C; C07C251/00; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/63; C07D213/65; C07D317/00; C07D317/08; C07D317/44; C07D317/46; C07D317/48; C07D317/50; C07D317/58
Claims Analysis
Total Claims: 0
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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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |