Patent US3006829A successfully refreshed from Google Patents.
US3006829A
Expired / Lapsed
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Process for treating linear polypropylene
Assignee: WR Grace and Co
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Filing: 1956-03-15
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Granted: 1961-10-31
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Expires: 1976-03-15
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 20:55
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR THE TREATMENT OF LINEAR POLYPROPYLENE COMPRISING INCORPORATING IN SAID LINEAR POLYPROPYLENE A 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 LINEAR POLYPROPYLENE TO HIGH ENERGY IONIZING RADIATION TO A DOSAGE OF AT LEAST 1X106 REP.
Claim 2
Dependent Claim
66 words
A PROCESS FOR THE TREATMENT OF LINEAR POLYPROPYLENE COMPRISING INCORPORATING IN SAID LINEAR POLYPROPYLENE A 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 LINEAR POLYPROPYLENE TO HIGH ENERGY IONIZING RADIATION TO A DOSAGE OF AT LEAST 1X106 REP.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |