US2444869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of sponge rubber
Assignee: Uniroyal Inc
•
Filing: 1945-04-27
•
Granted: 1948-07-06
•
Expires: 1965-04-27
Abstract
No abstract record available.
Inventors
- 👤 William J Clayton
- 👤 Paul V Butsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:12
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/28; C08L; C08L21/00; C08J2201/00; C08J2201/02; C08J2201/024; C08J2309/00; C08J2309/10
Claims Analysis
Total Claims: 0
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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) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |