US2462674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical plasticizers or softeners for butyl rubber
Assignee: Standard Oil Development Co
•
Filing: 1943-10-22
•
Granted: 1949-02-22
•
Expires: 1963-10-22
Abstract
No abstract record available.
Inventors
- 👤 Jr John Rehner
- 👤 Paul J Flory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:40
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14; Y; Y10; Y10S; Y10S260/00; Y10S260/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2317385A
Cited
US2305007A
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US2327975A
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US2258268A
Cited
GB538983A
Cited
US2326595A
Cited
US2393321A
Cited
US2391742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-22 | 1952-08-23 | 1953-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-22 | 1956-08-23 | 1957-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-22 | 1960-08-23 | 1961-02-22 | $7700.00 | Window Closed / Lapsed |