US3483143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic polymers
Assignee: Pennwalt Corp
•
Filing: 1966-10-06
•
Granted: 1969-12-09
•
Expires: 1986-10-06
Abstract
No abstract record available.
Inventors
- 👤 James Ping King
- 👤 Anthony Joseph Saraceno
- 👤 Burton Peter Block
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:29
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB1018456A
Cited
US3384605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |