US3046266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylene with a catalyst of ticl3 ground in propylene
Assignee: WR Grace and Co
•
Filing: 1960-05-25
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Granted: 1962-07-24
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Expires: 1980-05-25
Abstract
No abstract record available.
Inventors
- 👤 Calvin J Benning
- 👤 Walter R Wszolek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:41
CPC Classifications
C; C08; C08F; C08F110/00; C08F110/02; Y; Y10; Y10S; Y10S526/00; Y10S526/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE METHOD OF PREPARING A NORMALLY SOLID POLYETHYLENE COMPRISING POLYMERZING ETHYLENE AT A TEMPERATURE IN THE RANGE 75 TO 200*C. AND AT A PRESSURE OF AT LEAST 100 P.S.I. IN AN INERT ORGANIC SOLVENT WITH A PROPYLENE CONSISTING ESSENTIALLY OF TICL2 GROUND UNDER PROPYLENE UNTIL THE TICL2 PICKS UP AT LEAST 0.5% BY WEIGHT OF PROPYLENE.
Claim 2
Independent Claim
56 words
THE METHOD OF PREPARING A NORMALLY SOLID POLYETHYLENE COMPRISING POLYMERZING ETHYLENE AT A TEMPERATURE IN THE RANGE 75 TO 200*C. AND AT A PRESSURE OF AT LEAST 100 P.S.I. IN AN INERT ORGANIC SOLVENT WITH A PROPYLENE CONSISTING ESSENTIALLY OF TICL2 GROUND UNDER PROPYLENE UNTIL THE TICL2 PICKS UP AT LEAST 0.5% BY WEIGHT OF PROPYLENE.
References Cited (Backward Citations)
US2933485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |