US3004017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of olefin polymerization with catalysts containing tetraphenylborates
Assignee: Eastman Kodak Co
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Filing: 1958-11-06
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Granted: 1961-10-10
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Expires: 1978-11-06
Abstract
No abstract record available.
Inventors
- 👤 Jr George O Cash
- 👤 Jr Harry W Coover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:00
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
THE PROCESS FOR POLYMERIZING A NORMALLY GASEOUS A-MONOOLEFIN TO SOLID POLYMER WHICH COMPRISES CONTACTING SAID A-MONOOLEFIN WITH A CATALYST CONSISTING ESSENTIALLY OF THE TETRAPHENYLBORATE OF A TRANSITION ELEMENT SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, TUNGSTEN, VANADIUM, CHROMIUM AND MOLYBDENUM AT A TEMPERATURE WITHIN THE RANGE OF -20*C. TO 250*C., THE VALENCES OF SAID TRANSISTION ELEMENT BEING SATISFIED BY ONLY TETRAPHENYLBORATE GROUPS.
Claim 2
Dependent Claim
63 words
THE PROCESS FOR POLYMERIZING A NORMALLY GASEOUS A-MONOOLEFIN TO SOLID POLYMER WHICH COMPRISES CONTACTING SAID A-MONOOLEFIN WITH A CATALYST CONSISTING ESSENTIALLY OF THE TETRAPHENYLBORATE OF A TRANSITION ELEMENT SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, TUNGSTEN, VANADIUM, CHROMIUM AND MOLYBDENUM AT A TEMPERATURE WITHIN THE RANGE OF -20*C. TO 250*C., THE VALENCES OF SAID TRANSISTION ELEMENT BEING SATISFIED BY ONLY TETRAPHENYLBORATE GROUPS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |