US2993876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene polymer-polyisobutylene composition, method of making same, and electrical wire coated therewith
Assignee: Phillips Petroleum Co
•
Filing: 1957-04-22
•
Granted: 1961-07-25
•
Expires: 1977-04-22
Abstract
No abstract record available.
Inventors
- 👤 Roger M Mcglamery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:40
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L2203/00; C08L2203/20; C08L2203/202; C08L23/18; C08L23/20; C08L23/22; Y; Y10; Y10S; Y10S116/00; Y10S116/14; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A COMPOSITION OF MATTER SUITABLE FOR USE AS AN ELECTRICAL INSULATING MATERIAL AND HAVING HIGH THERMAL STABILITY COMPRISING ABOUT 60 TO 80 PARTS BY WEIGHT OF ETHYLENE POLYMER CHARACTERIZED BY A DENSITY IN THE RANGE OF ABOUT 0.94 TO 0.99 GRAM PER CUBIC CENTIMETER AND CRYSTALLINITY IN THE RANGE OF ABOUT 80 TO 94 PERCENT AT 25*C., AND ABOUT 20 TO 40 PARTS BY WEIGHTT OF POLYISOBUTYLENE CHARACTERIZED BY A MOLECULAR WEIGHT OF ABOUT 300,000.
Claim 2
Dependent Claim
75 words
A COMPOSITION OF MATTER SUITABLE FOR USE AS AN ELECTRICAL INSULATING MATERIAL AND HAVING HIGH THERMAL STABILITY COMPRISING ABOUT 60 TO 80 PARTS BY WEIGHT OF ETHYLENE POLYMER CHARACTERIZED BY A DENSITY IN THE RANGE OF ABOUT 0.94 TO 0.99 GRAM PER CUBIC CENTIMETER AND CRYSTALLINITY IN THE RANGE OF ABOUT 80 TO 94 PERCENT AT 25*C., AND ABOUT 20 TO 40 PARTS BY WEIGHTT OF POLYISOBUTYLENE CHARACTERIZED BY A MOLECULAR WEIGHT OF ABOUT 300,000.
References Cited (Backward Citations)
GB514687A
Cited
US2369471A
Cited
US2339958A
Cited
US2468165A
Cited
US2692257A
Cited
US2788340A
Cited
US2854435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |