Patent US3501558A successfully refreshed from Google Patents.
US3501558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing coherent bodies of foamed synthetic plastic material
Assignee: W M B INTERN AB
•
Filing: 1968-04-16
•
Granted: 1970-03-17
•
Expires: 1988-04-16
Abstract
No abstract record available.
Inventors
- 👤 Carl Georg Munters
- 👤 Nils Gunnar Sjoberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:25
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/22; C08J9/228; C08J9/236; B; B29; B29C; B29C44/00; B29C44/20; B29C44/206; B29C67/00; B29C67/20; B29C67/207
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |