US3147243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radioactive polymers
Assignee: ConocoPhillips Co
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Filing: 1960-08-08
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Granted: 1964-09-01
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Expires: 1980-08-08
Abstract
No abstract record available.
Inventors
- 👤 Gordon D Brindell
- 👤 David W Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:19
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04; C; C08; C08F; C08F10/00; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S526/00; Y10S526/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PROCESS FOR PREPARING A RADIOATIVE POLYMER WHICH COMPRISES CATALYTICALLY POLYMERIZING ETHYLENE AT A TEMPERATURE BETWEEN ABOUT 25* AND 200*C. IN THE PRESENCE OF FROM ABOUT 1-25 MOLE PERCENTT TRITIUM BASED ON THE ETHYLENE WHEREIN THE CATALYST IS AN ORGANOMETALTRANSITION METAL HALIDE CATALYST SYSTEM.
Claim 2
Dependent Claim
44 words
A PROCESS FOR PREPARING A RADIOATIVE POLYMER WHICH COMPRISES CATALYTICALLY POLYMERIZING ETHYLENE AT A TEMPERATURE BETWEEN ABOUT 25* AND 200*C. IN THE PRESENCE OF FROM ABOUT 1-25 MOLE PERCENTT TRITIUM BASED ON THE ETHYLENE WHEREIN THE CATALYST IS AN ORGANOMETALTRANSITION METAL HALIDE CATALYST SYSTEM.
References Cited (Backward Citations)
GB807204A
Cited
US3033797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |