US2906678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of irradiating polyethylene at elevated temperatures
Assignee: General Electric Co
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Filing: 1955-04-11
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Granted: 1959-09-29
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Expires: 1975-04-11
Abstract
No abstract record available.
Inventors
- 👤 Elliott J Lawton
- 👤 Arthur M Bueche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:12
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; B; B01; B01J; B01J19/00; B01J19/08; B01J19/081; B29; B29C; B29C71/00; B29C71/04; B29C35/00; B29C35/02; B29C2035/0283; B29C35/08; B29C35/0866; B29C2035/0872; B29C2035/0877; B29C35/16; B29C2035/1616; B29C2035/1625; B29K; B29K2023/00; B29K2023/04; B29K2023/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS OF IRRADIATING POLYETHYLENE WITH ELECTRONS HAVING AN ENERGY OF 5X104 TO 2X107 ELECRON VOLTS TO AN IRRADIATION DOSE OF 3X106 TO 5X108 REP WHICH COMPRISES PERFORMING THE IRRADIATION WHILE THE POLYETHYLENE IS HEATED TO A TEMPERATURE IN THE RANGE OF 85* C. TO JUST BELOW THE MELTING POINT OF THE POLYMER, THEREBY PRODUCING A MATERIAL WITH A HIGHER RATIO OF CROSS-LINKS TO TRANSUNSATURATE GROUPS THAN WOULD HAVE BEEN OBTAINED IF THE POLYETHYLENE HAD BEEN IRRADIATED AT ROOM TEMPERATURE TO A RADIATION DOSE PRODUCING THE SAME NUMBER OF CROSSLINKS.
Claim 2
Dependent Claim
90 words
A PROCESS OF IRRADIATING POLYETHYLENE WITH ELECTRONS HAVING AN ENERGY OF 5X104 TO 2X107 ELECRON VOLTS TO AN IRRADIATION DOSE OF 3X106 TO 5X108 REP WHICH COMPRISES PERFORMING THE IRRADIATION WHILE THE POLYETHYLENE IS HEATED TO A TEMPERATURE IN THE RANGE OF 85* C. TO JUST BELOW THE MELTING POINT OF THE POLYMER, THEREBY PRODUCING A MATERIAL WITH A HIGHER RATIO OF CROSS-LINKS TO TRANSUNSATURATE GROUPS THAN WOULD HAVE BEEN OBTAINED IF THE POLYETHYLENE HAD BEEN IRRADIATED AT ROOM TEMPERATURE TO A RADIATION DOSE PRODUCING THE SAME NUMBER OF CROSSLINKS.
References Cited (Backward Citations)
CH144291A
Cited
US1906402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |