US2962489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylene
Assignee: Bjorksten Research Laboratories Inc
•
Filing: 1955-02-10
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Granted: 1960-11-29
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Expires: 1975-02-10
Abstract
No abstract record available.
Inventors
- 👤 Zeldin Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:48
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS WHICH COMPRISES POLYMERIZING ETHYLENE IN THE PRESENCE OF A TIGGERING COMPOSITION FORMED BY THE INTERACTION OF A DIAZOALKANE AND A CATALYST SELECTED FROM THE GROUP CONSISTING OF BORON TRIFLUORIDE, DIBORANE, METHYL BORATE, BORIC ACID, BORIC OXIDE, BOROSILICATE GLASS AT A TEMPERATURE OF FROM -40*C. TO 150*C. UNDER A PRESSURE OF FROM 1 TO 100 ATMOSPHERES.
Claim 2
Dependent Claim
57 words
A PROCESS WHICH COMPRISES POLYMERIZING ETHYLENE IN THE PRESENCE OF A TIGGERING COMPOSITION FORMED BY THE INTERACTION OF A DIAZOALKANE AND A CATALYST SELECTED FROM THE GROUP CONSISTING OF BORON TRIFLUORIDE, DIBORANE, METHYL BORATE, BORIC ACID, BORIC OXIDE, BOROSILICATE GLASS AT A TEMPERATURE OF FROM -40*C. TO 150*C. UNDER A PRESSURE OF FROM 1 TO 100 ATMOSPHERES.
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) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |