US2295660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving the heat stability of polyvinyl chloride articles
Assignee: Individual
•
Filing: 1939-07-06
•
Granted: 1942-09-15
•
Expires: 1959-07-06
Abstract
No abstract record available.
Inventors
- 👤 Hubert Emil
- 👤 Rein Herbert
- 👤 Rossler Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:45
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/126; C08F; C08F8/00; C08F8/18; C08F8/20; D; D06; D06M; D06M11/00; D06M11/07; D06M11/09; C08J2327/00; Y; Y10; Y10S; Y10S8/00; Y10S8/10
Claims Analysis
Total Claims: 0
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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) | 1945-09-14 | 1946-03-16 | 1946-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-09-14 | 1950-03-16 | 1950-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-09-14 | 1954-03-16 | 1954-09-15 | $7700.00 | Window Closed / Lapsed |