US2765307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxyamines
Assignee: Rohm and Haas Co
•
Filing: 1953-02-11
•
Granted: 1956-10-02
•
Expires: 1973-02-11
Abstract
No abstract record available.
Inventors
- 👤 Claude J Schmidle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:16
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A PROCESS FOR PREPARING ETHER HYDROXY TERTIARY AMINES OF THE CLASS CONSISTING OF COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
17 words
A PROCESS FOR PREPARING ETHER HYDROXY TERTIARY AMINES OF THE CLASS CONSISTING OF COMPOUNDS OF THE FORMULA
References Cited (Backward Citations)
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US2065418A
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US1964973A
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US2277629A
Cited
US2411664A
Cited
US2501185A
Cited
GB657302A
Cited
US2607778A
Cited
US2647117A
Cited
US2647118A
Cited
US2765308A
Cited
US2692267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |