Patent US3255249A successfully refreshed from Google Patents.
US3255249A
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2-branched lower alkyl-amino-1-(indan-, hydrogenated indan- and hydrogenated naphth-2-yl) lower alkanols
Assignee: Imperial Chemical Industries Ltd
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Filing: 1963-04-26
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Granted: 1966-06-07
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Expires: 1983-04-26
Abstract
No abstract record available.
Inventors
- 👤 Howe Ralph
- 👤 Smith Leslie Harold
- 👤 Stephenson John Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:50
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/04; C07C; C07C45/00; C07C45/27; C07C45/45; C07C45/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A HOMOCYCLID COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA:
Claim 2
Dependent Claim
13 words
A HOMOCYCLID COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA:
References Cited (Backward Citations)
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Cited
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US3099599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |