Patent US2430993A successfully refreshed from Google Patents.
US2430993A
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Plasticizing polyisobutylene utilizing benzoyl peroxide
Assignee: Standard Oil Development Co
•
Filing: 1944-03-03
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Granted: 1947-11-18
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Expires: 1964-03-03
Abstract
No abstract record available.
Inventors
- 👤 Jr John Rehner
- 👤 Paul J Flory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:06
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14; C08F; C08F8/00; C08F8/50; Y; Y10; Y10S; Y10S526/00; Y10S526/914
Claims Analysis
Total Claims: 0
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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) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |