Patent EP0338779A2 successfully refreshed from Google Patents.
Patent US3507948A successfully refreshed from Google Patents.
US3507948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solution spinning of polypropylene
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1967-09-29
•
Granted: 1970-04-21
•
Expires: 1987-09-29
Abstract
No abstract record available.
Inventors
- 👤 Robert R Buntin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3032384A
Cited
US3048465A
Cited
US3088793A
Cited
US3017238A
Cited
US3210452A
Cited
US3412191A
Cited
US3415121A
Cited
USD762159S1
Cited
USD762160S1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |