Patent US2392857A successfully refreshed from Google Patents.
US2392857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet materials comprising polyvinyl chloride
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1943-05-17
•
Granted: 1946-01-15
•
Expires: 1963-05-17
Abstract
No abstract record available.
Inventors
- 👤 Mcgill John Heron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:52
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-01-14 | 1949-07-16 | 1950-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-01-14 | 1953-07-16 | 1954-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-01-14 | 1957-07-16 | 1958-01-15 | $7700.00 | Window Closed / Lapsed |