US2960453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating plastics and products thereof
Assignee: WR Grace and Co
•
Filing: 1955-09-06
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Granted: 1960-11-15
•
Expires: 1975-09-06
Abstract
No abstract record available.
Inventors
- 👤 Paul M Cook
- 👤 James B Meikle
- 👤 Graham Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:02
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/28; B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/104; C08J9/105; C08K; C08K3/00; C08K3/02; C08K3/06; C08K5/00; C08K5/36; C08K5/43; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR THE TREATMENT OF POLYETHYLENE COMPRISING INCORPORATING IN SAID POLYETHYLENE AND MINOR AMOUNT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF RUBBER ACCELERATORS AND VULCANIZING AGENTS CONTAINING AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF SULPHUR, SELENIUM AND TELLURIUM AND A SULFONYL HYDRAZIDE, AND EXPOSING SAID POLYETHYLENE TO HIGH ENERGY IONIZING RADIATION TO A DOSAGE OF AT LEAST 1X10**6 REP., SAID IRRADIATION DOSAGE BEING APPLIED AT A RATE OF AT LEAST 9X10**5 ROENTGENS PER HOUR.
Claim 2
Dependent Claim
78 words
A PROCESS FOR THE TREATMENT OF POLYETHYLENE COMPRISING INCORPORATING IN SAID POLYETHYLENE AND MINOR AMOUNT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF RUBBER ACCELERATORS AND VULCANIZING AGENTS CONTAINING AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF SULPHUR, SELENIUM AND TELLURIUM AND A SULFONYL HYDRAZIDE, AND EXPOSING SAID POLYETHYLENE TO HIGH ENERGY IONIZING RADIATION TO A DOSAGE OF AT LEAST 1X10**6 REP., SAID IRRADIATION DOSAGE BEING APPLIED AT A RATE OF AT LEAST 9X10**5 ROENTGENS PER HOUR.
References Cited (Backward Citations)
US1906402A
Cited
US2668133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |