US2608717A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reducing weak spots in calendered film
Assignee: Union Carbide Corp
•
Filing: 1950-11-20
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Granted: 1952-09-02
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Expires: 1970-11-20
Abstract
No abstract record available.
Inventors
- 👤 Jerry W Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:48
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/32; B29C43/56; B29B; B29B13/00; B29B13/08; B29C43/22; B29C43/24; B29K; B29K2023/00; Y; Y10; Y10S; Y10S425/00; Y10S425/235
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US920970A
Cited
US2424856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |