Patent US3000990A successfully refreshed from Google Patents.
US3000990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of olefins from amorphous linear polymers
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1959-04-27
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Granted: 1961-09-19
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Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph M Hill
- 👤 Jr Joseph M Kelley
- 👤 John R Lovett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:54
CPC Classifications
C; C07; C07C; C07C4/00; C08; C08F; C08F8/00; C08F8/50; C07C2531/00; C07C2531/16; C07C2531/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A PROCESS FOR PREPARING MONOOLEFINS PREDOMINANTLY OF THE GENERAL FORMULAE
Claim 2
Dependent Claim
10 words
A PROCESS FOR PREPARING MONOOLEFINS PREDOMINANTLY OF THE GENERAL FORMULAE
References Cited (Backward Citations)
US2552692A
Cited
BE533362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |