Patent US3293258A successfully refreshed from Google Patents.
US3293258A
Expired / Lapsed
US
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Certain 1-(2-benzoxazolyl)-4-(2-naphthoxazolyl)-benzene compounds
Assignee: BASF Schweiz AG
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Filing: 1965-06-02
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Granted: 1966-12-20
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Expires: 1985-06-02
Abstract
No abstract record available.
Inventors
- 👤 Siegrist Adolf Emil
- 👤 Maeder Erwin
- 👤 Liechti Peter
- 👤 Guglielmetti Leonardo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:19
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/62; C07D263/64; D; D06; D06L; D06L4/00; D06L4/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
AN OXAZOLE COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
6 words
AN OXAZOLE COMPOUND OF THE FORMULA
References Cited (Backward Citations)
CA567665A
Cited
US3005779A
Cited
US2737516A
Cited
US2985661A
Cited
US3175980A
Cited
US3135762A
Cited
US3178445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |