Patent US3364189A successfully refreshed from Google Patents.
US3364189A
Expired / Lapsed
US
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Reaction of phosphonitrilic chloride
Assignee: Wyeth Holdings LLC
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Filing: 1964-12-17
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Granted: 1968-01-16
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Expires: 1984-12-17
Abstract
No abstract record available.
Inventors
- 👤 Allcock Harry Rex
- 👤 Kugel Robert Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:07
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2109491A
Cited
US2214769A
Cited
GB788785A
Cited
FR1270800A
Cited
US3259817A
Cited
US3329663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |