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US2371868A
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Porous polyvinyl chloride compositions
Assignee: Individual
•
Filing: 1942-02-05
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Granted: 1945-03-20
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Expires: 1962-02-05
Abstract
No abstract record available.
Inventors
- 👤 Berg Herbert
- 👤 Doriat Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:01
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/24; B; B41; B41N; B41N7/00; B41N7/06; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; Y; Y10; Y10S; Y10S260/00; Y10S260/47; Y10S264/00; Y10S264/60; Y10S264/61; Y10S36/00; Y10S36/02; Y10S521/00; Y10S521/919
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) | 1948-03-19 | 1948-09-18 | 1949-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-03-19 | 1952-09-18 | 1953-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-03-19 | 1956-09-18 | 1957-03-20 | $7700.00 | Window Closed / Lapsed |