US2850488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel hydrocarbon polymers
Assignee: EIDP Inc
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Filing: 1955-07-15
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Granted: 1958-09-02
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Expires: 1975-07-15
Abstract
No abstract record available.
Inventors
- 👤 Baxter Warren Nesmith
- 👤 Robinson Ivan Maxwell
- 👤 Rombach Louis Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:26
CPC Classifications
C; C08; C08F; C08F32/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
75 words
THE PROCESS WHICH COMPRISES POLYMERIZING A COMPOUND OF THE CLASS CONSISTING OF INDENE AND ACENAPHTHYLENE IN THE PRESENCE OF A CATALYST FORMED BY ADMIXING A HALIDE OF AN ELEMENT OF THE CLASS CONSISTING OF TITANIUM, VANADIUM AND MOLYBDENUM, WITH A REDUCING COMPOUND HAVING AT LEAST ONE RADICAL OF THE CLASS CONSISTING OF HYDROGEN AND HYDROCARBON RADICALS ATTACHED DIRECTLY TO A METAL OF THE CLASS CONSISTING OF LITHIUM AND ALUMINUM, IN AN INERT LIQUID HYDROCARBON MEDIUM.
Claim 2
Dependent Claim
75 words
THE PROCESS WHICH COMPRISES POLYMERIZING A COMPOUND OF THE CLASS CONSISTING OF INDENE AND ACENAPHTHYLENE IN THE PRESENCE OF A CATALYST FORMED BY ADMIXING A HALIDE OF AN ELEMENT OF THE CLASS CONSISTING OF TITANIUM, VANADIUM AND MOLYBDENUM, WITH A REDUCING COMPOUND HAVING AT LEAST ONE RADICAL OF THE CLASS CONSISTING OF HYDROGEN AND HYDROCARBON RADICALS ATTACHED DIRECTLY TO A METAL OF THE CLASS CONSISTING OF LITHIUM AND ALUMINUM, IN AN INERT LIQUID HYDROCARBON MEDIUM.
Claim 3
Dependent Claim
20 words
PROCESS OF CLAIM 1 WHEREIN THE MONOMERS SUBJECTED TO THE ACTION OF THE SAID CATALYST COMPRISES BOTH ETHYLENE AND INDENE.
Claim 4
Dependent Claim
12 words
A PARTIALLY CRYSTALLINE ETHYLENE-INDENE INTERPOLYMER, OBTAINED BY THE PROCESS OF CLAIM 3.
Claim 5
Dependent Claim
7 words
COMPOSITION OF CLAIM 7, IN FILM FORM.
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) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |