US3516964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of siloxane-containing epoxy polymers
Assignee: National Aeronautics and Space Administration
•
Filing: 1968-03-26
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Granted: 1970-06-23
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Expires: 1988-03-26
Abstract
No abstract record available.
Inventors
- 👤 William J Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:00
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/30; C08G59/306; C08G59/40; C08G59/50; C08G59/504; C08G77/48; C08G77/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3300418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |