US3530200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene oligomerization
Assignee: Shell USA Inc
•
Filing: 1969-01-13
•
Granted: 1970-09-22
•
Expires: 1989-01-13
Abstract
No abstract record available.
Inventors
- 👤 Peter W Glockner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:56
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/02; B01J27/04; B01J27/043; B01J37/00; B01J37/16; B01J37/20; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/30; C07C2521/00; C07C2521/02; C07C2521/04; C07C2527/00; C07C2527/06; C07C2527/128; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3161697A
Cited
US3096385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |