US3301855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of 4-nu-(2-nu, nu-dimethylaminolower alkyl)-amino quinazoline
Assignee: BASF Corp
•
Filing: 1964-03-02
•
Granted: 1967-01-31
•
Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Blatter Herbert Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:16
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/70; C07D239/72; C07D239/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
4-N-(2-N,N-DIMETHYLAMINOETHYL)-AMINO - QUINAZOLINE.
Claim 2
Dependent Claim
3 words
4-N-(2-N,N-DIMETHYLAMINOETHYL)-AMINO - QUINAZOLINE.
References Cited (Backward Citations)
US2945859A
Cited
US3131187A
Cited
US2497347A
Cited
US2770569A
Cited
US2742397A
Cited
US3184462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |