Patent US3304310A successfully refreshed from Google Patents.
US3304310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain anthraquinonethiazole compounds
Assignee: BASF Schweiz AG
•
Filing: 1962-06-11
•
Granted: 1967-02-14
•
Expires: 1982-06-11
Abstract
No abstract record available.
Inventors
- 👤 Hari Istvan
- 👤 Staeuble Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:14
CPC Classifications
C; C09; C09B; C09B5/00; C09B5/62; C07; C07D; C07D333/00; C07D333/02; C07D333/04; C07D333/26; C07D333/38; C09B1/00; C09B1/16; C09B1/20; C09B1/36; C09B1/42; C09B1/44; C09B1/445; C09B1/46; C09B1/467; C09B3/00; C09B3/22; C09B3/30; C09B3/38; C09B5/24; C09B5/26; C09B5/28; C09B5/34; C09B5/40; C09B62/00; C09B62/02; C09B62/04; C09B62/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
2-CARBOXYBENZOYLAMINOANTHRAQUINONYL-5:6 - PHTHALOLBENZTHIAZOLE.
Claim 2
Dependent Claim
3 words
2-CARBOXYBENZOYLAMINOANTHRAQUINONYL-5:6 - PHTHALOLBENZTHIAZOLE.
References Cited (Backward Citations)
US2049189A
Cited
US2206128A
Cited
US2204970A
Cited
US2449011A
Cited
US2508814A
Cited
US2567822A
Cited
US2555713A
Cited
US2567132A
Cited
FR1021398A
Cited
US2719839A
Cited
US2853492A
Cited
US2945866A
Cited
US2870172A
Cited
US2905685A
Cited
US2919284A
Cited
US3045019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |