US3142682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary amino derivatives of chromans and homo-chromans
Assignee: BASF Corp
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Filing: 1961-11-21
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Granted: 1964-07-28
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Expires: 1981-11-21
Abstract
No abstract record available.
Inventors
- 👤 Stevens George De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:37
CPC Classifications
C; C07; C07D; C07D313/00; C07D313/02; C07D313/06; C07D313/08; B; B01; B01J; B01J2/00; B01J2/02; B01J2/04; C07D311/00; C07D311/02; C07D311/04; C07D311/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF A COMPOUND HAVING ONE OF THE FORMULAR SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
21 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF A COMPOUND HAVING ONE OF THE FORMULAR SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |