US3449482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming molded ribbed panels
Assignee: Union Carbide Corp
•
Filing: 1964-10-23
•
Granted: 1969-06-10
•
Expires: 1984-10-23
Abstract
No abstract record available.
Inventors
- 👤 James A Mitchell
- 👤 Donald E Wilbur Jr
- 👤 Frederick W Wurtzell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:45
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/38; E04C2/388; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/1092; Y10T428/00; Y10T428/24; Y10T428/24174; Y10T428/24479; Y10T428/2457
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
NL77018C
Cited
CA550166A
Cited
US839680A
Cited
US1337254A
Cited
US1937680A
Cited
US1921524A
Cited
US2475375A
Cited
US2528049A
Cited
US2715598A
Cited
US2960423A
Cited
US3231455A
Cited
US3260635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |