Patent US2581994A successfully refreshed from Google Patents.
Patent US4369770A successfully refreshed from Google Patents.
Patent US3370079A successfully refreshed from Google Patents.
US3370079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-isopropyl-diphenyl-amine-n-carboxylic acid beta-(dimethylamino)propyl thioester
Assignee: Bayer AG
•
Filing: 1965-02-18
•
Granted: 1968-02-20
•
Expires: 1985-02-18
Abstract
No abstract record available.
Inventors
- 👤 Horlein Ulrich
- 👤 Eue Ludwig
- 👤 Hack Helmuth
- 👤 Risse Klaus-Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:36
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/75; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
THE COMPOUND 4 - ISOPROPYL-DIPHENYLAMINE-N-CARBOXYLIC ACID B-(DIMETHYLAMINO) PROPYL THIOESTER HAVING THE FORMULA PHENYL-N(-(1,4-PHENYLENE)-CH(-CH3)2)-CO-S-CH(-CH3)-CH2N(-CH3)2 AND THE CORRESPONDING ACID ADDITION SALTS THEREOF.
Claim 2
Dependent Claim
20 words
THE COMPOUND 4 - ISOPROPYL-DIPHENYLAMINE-N-CARBOXYLIC ACID B-(DIMETHYLAMINO) PROPYL THIOESTER HAVING THE FORMULA PHENYL-N(-(1,4-PHENYLENE)-CH(-CH3)2)-CO-S-CH(-CH3)-CH2N(-CH3)2 AND THE CORRESPONDING ACID ADDITION SALTS THEREOF.
References Cited (Backward Citations)
US2642451A
Cited
DE1150380B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |