US2525787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propylene polymerization process
Assignee: ExxonMobil Oil Corp
•
Filing: 1947-10-31
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Granted: 1950-10-17
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Expires: 1967-10-31
Abstract
No abstract record available.
Inventors
- 👤 Celeste M Fontana
- 👤 Alex G Oblad
- 👤 Glenn A Kidder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:18
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/20; C07C2/22; C08; C08F; C08F10/00; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/125; C07C2531/00; C07C2531/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A PROCESS FOR THE PRODUCTION OF A PROPYLENE POLYMER HAVING A CHANGE IN VISCOSITY WITH TEMPERATURE SMALLER THAN THAT GIVEN BY THE EXPRESSION
Claim 2
Dependent Claim
23 words
A PROCESS FOR THE PRODUCTION OF A PROPYLENE POLYMER HAVING A CHANGE IN VISCOSITY WITH TEMPERATURE SMALLER THAN THAT GIVEN BY THE EXPRESSION
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |