US3547843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed polyolefin compositions using polyazidoformamides
Assignee: Chevron USA Inc
•
Filing: 1969-09-29
•
Granted: 1970-12-15
•
Expires: 1989-09-29
Abstract
No abstract record available.
Inventors
- 👤 Shigeto Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:50
CPC Classifications
C; C07; C07C; C07C247/00; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/106
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3098832A
Cited
US3250731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |