US2906679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Irradiated polyethylene
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
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:08
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
78 words
A PROCESS WHICH COMPRISES (1) HEATING POLYETHYLENE TO THE AMORPHOUS STATE, (2) COOLING THE POLYETHYLENE TO A TEMPERATURE RANGE WHERE IT IS NORMALLY CRYSTALLINE, AND (3) WHILE MAINTAINED IN SAID TEMPERATURE RANGE, BUT NO COLDER THAN 25* C., IRRADIATING THE POLYETHYLENE WITH IONIZING RADIATION HAVING AN ENERGY EQUIVALENT TO AT LEAST 5X104 ELECTRON VOLTS TO A RADIATION DOSE IN THE RANGE OF 3X106 TO 5X108 REP BEFORE EQUILIBRIUM OF THE CRYSTALLINE STATE OF THE POLYETHYLENE HAS BEEN ESTABLISHED
Claim 2
Dependent Claim
78 words
A PROCESS WHICH COMPRISES (1) HEATING POLYETHYLENE TO THE AMORPHOUS STATE, (2) COOLING THE POLYETHYLENE TO A TEMPERATURE RANGE WHERE IT IS NORMALLY CRYSTALLINE, AND (3) WHILE MAINTAINED IN SAID TEMPERATURE RANGE, BUT NO COLDER THAN 25* C., IRRADIATING THE POLYETHYLENE WITH IONIZING RADIATION HAVING AN ENERGY EQUIVALENT TO AT LEAST 5X104 ELECTRON VOLTS TO A RADIATION DOSE IN THE RANGE OF 3X106 TO 5X108 REP BEFORE EQUILIBRIUM OF THE CRYSTALLINE STATE OF THE POLYETHYLENE HAS BEEN ESTABLISHED
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 |