Patent US2585722A successfully refreshed from Google Patents.
Patent US2765307A successfully refreshed from Google Patents.
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 18:05
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)
US1978539A
Cited
DE569149C
Cited
US2065418A
Cited
US1964973A
Cited
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 |