US2476430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersions of isobutylene-diolefin copolymer
Assignee: Patent and Licensing Corp
•
Filing: 1944-03-30
•
Granted: 1949-07-19
•
Expires: 1964-03-30
Abstract
No abstract record available.
Inventors
- 👤 Edward H Robbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:02
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J2323/00; C08J2323/02; C08J2323/18; C08J2323/20; C08J2323/22
Claims Analysis
Total Claims: 0
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US2389796A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |