Patent US4188952A successfully refreshed from Google Patents.
US3485912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite article formation
Assignee: Dow Chemical Co
•
Filing: 1965-02-09
•
Granted: 1969-12-23
•
Expires: 1985-02-09
Abstract
No abstract record available.
Inventors
- 👤 Walter J Schrenk
- 👤 Douglas S Chisholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:03
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C48/00; B29C48/03; B29C48/06; B29C48/07; B29C48/08; B29C48/16; B29C48/18; B29C48/21; B29C48/25; B29C48/30; B29C48/304; B29C48/305; B29C48/307; B29C48/05
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2386173A
Cited
US2627088A
Cited
US3038235A
Cited
US3146284A
Cited
US3176344A
Cited
US3274646A
Cited
US3315021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |