Patent US3470176A successfully refreshed from Google Patents.
US3470176A
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US
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Catalyzed nitrile trimerization process
Assignee: 3M Co
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Filing: 1967-03-10
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Granted: 1969-09-30
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Expires: 1987-03-10
Abstract
No abstract record available.
Inventors
- 👤 Joseph La Mar Zollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:48
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/66; C07F9/70; C07F7/00; C07F7/22; C07F7/2224; C07F9/90; C08; C08G; C08G73/00; C08G73/06; C08G73/0622; C08G73/0638; C08G73/065; C08G73/0655; C08G73/0661
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2598811A
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US2467926A
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US2824852A
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US3086946A
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US3095414A
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US3278492A
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US3369002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |