US2497553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butenol alkanol amines
Assignee: Dow Chemical Co
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Filing: 1948-10-16
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Granted: 1950-02-14
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Expires: 1968-10-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Merton W Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:46
CPC Classifications
C; C07; C07C; C07C215/00; C07C215/02; C07C215/04; C07C215/06; C07C215/14; C07C217/00; C07C217/02; C07C217/04; C07C217/06; C07C217/08; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A HYDROXYALIPHATIC MONOAMINE HAVING ATTACHED TO THE NITROGEN ATOM THEREOF AS THE SOLE ORGANIC SUBSTITUENTS THEREON NOT MORE THAN THREE RADICALS CONSISTING OF FROM ONE TO TWO 3-BUTEN2-OL RADICALS AND FROM ONE TO TWO 2-HYDROXYALKYL RADICALS EACH CONTAINING FROM TWO TO THREE CARBON ATOMS.
Claim 2
Dependent Claim
44 words
A HYDROXYALIPHATIC MONOAMINE HAVING ATTACHED TO THE NITROGEN ATOM THEREOF AS THE SOLE ORGANIC SUBSTITUENTS THEREON NOT MORE THAN THREE RADICALS CONSISTING OF FROM ONE TO TWO 3-BUTEN2-OL RADICALS AND FROM ONE TO TWO 2-HYDROXYALKYL RADICALS EACH CONTAINING FROM TWO TO THREE CARBON ATOMS.
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) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |