US3545942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear phosphonitrilic chloride derivatives containing terminal organic groups
Assignee: WR Grace and Co
•
Filing: 1967-10-12
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Granted: 1970-12-08
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Expires: 1987-10-12
Abstract
No abstract record available.
Inventors
- 👤 Rip G Rice
- 👤 Robert M Murch
- 👤 Dorothy C De Vore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:28
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/062; C07F9/065; C07F9/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |