US3511834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted 4,4-bis(2-(1,3,4-oxadiazolyl)) stilbenes
Assignee: BASF Schweiz AG
•
Filing: 1967-09-05
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Granted: 1970-05-12
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Expires: 1987-09-05
Abstract
No abstract record available.
Inventors
- 👤 Adolf Emil Siegrist
- 👤 Erwin Maeder
- 👤 Peter Liechti
- 👤 Leonardo Guglielmetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:37
CPC Classifications
C; C07; C07D; C07D271/00; C07D271/02; C07D271/10; C07D271/107; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/35; C08K5/353; C08L; C08L27/00; C08L67/00; C08L75/00; C08L75/04; D; D06; D06L; D06L4/00; D06L4/60; C08L2203/00; C08L2203/12; C08L23/00; C08L23/02; C08L23/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3351591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |