Patent US3176040A successfully refreshed from Google Patents.
US3176040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel 2, 2'-(ethylenediimino)-di-1-butanols
Assignee: Wyeth Holdings LLC
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Filing: 1962-01-23
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Granted: 1965-03-30
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Expires: 1982-01-23
Abstract
No abstract record available.
Inventors
- 👤 Wilkinson Raymond George
- 👤 Shepherd Robert Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:01
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/30; C07D213/60; C07D213/62; C07D213/63; C07D213/64; C07D213/78; C07D213/79
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF N-(N-(A-ETHYL-B-HYDROXYETHYL)-B-AMINOETHYL)-B-ETHYLB-AMINOETHANOL AND THE NON-TOXIC ACID-ADDITION SALTS THEREOF.
Claim 2
Dependent Claim
15 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF N-(N-(A-ETHYL-B-HYDROXYETHYL)-B-AMINOETHYL)-B-ETHYLB-AMINOETHANOL AND THE NON-TOXIC ACID-ADDITION SALTS THEREOF.
References Cited (Backward Citations)
US2248729A
Cited
US2913496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |