Patent US3337628A successfully refreshed from Google Patents.
US3337628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-naphthyloxy-2-hydroxypropylamines
Assignee: Imperial Chemical Industries Ltd
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Filing: 1963-11-12
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Granted: 1967-08-22
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Crowther Albert Frederick
- 👤 Smith Leslie Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:25
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07C; C07C45/00; C07C45/45; C07C51/00; C07C51/58; C07C51/60; C07C59/00; C07C59/40; C07C59/58; C07C59/64; C07C59/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF NAPHTHALENE DERIVATIVES OF THE FORMULA:
Claim 2
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF NAPHTHALENE DERIVATIVES OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |