Patent US3507928A successfully refreshed from Google Patents.
US3507928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization of 1,3-cyclooctadiene
Assignee: Uniroyal Chemical Co Inc
•
Filing: 1968-04-12
•
Granted: 1970-04-21
•
Expires: 1988-04-12
Abstract
No abstract record available.
Inventors
- 👤 Robert E Rinehart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:27
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/28; C07C; C07C13/00; C07C13/02; C07C13/26; C07C13/263; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2525; C07C5/2531; C07C5/2543; C07C5/255; C07C5/2562; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/931
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3305593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |