US3505352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogen-5 trimethyl-1,3,3 indoline 2-spiro-3' nitro 8' naphtho (1,2-b) pyrannes
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1965-02-17
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Granted: 1970-04-07
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Expires: 1985-02-17
Abstract
No abstract record available.
Inventors
- 👤 Rene Lucien Gautron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:36
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; G; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/23; G03; G03C; G03C1/00; G03C1/685
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB887958A
Cited
US3149120A
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US3231584A
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US3218332A
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US3197475A
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US3272646A
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US3299079A
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US3290331A
Cited
US3321491A
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US3331854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |