Patent US3047552A successfully refreshed from Google Patents.
US3047552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization of elastomers
Assignee: Shell USA Inc
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Filing: 1959-05-25
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Granted: 1962-07-31
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Expires: 1979-05-25
Abstract
No abstract record available.
Inventors
- 👤 Richard J Reynolds
- 👤 Sven H Ruetman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:26
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/07; C08K5/08; C08K5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD OF VULCANIZING ELASTOMERIC COPOLYMERS OF MONO-ALPHA-OLEFINS HAVING UP TO 6 CARBON ATOMS, THE COPOLYMER BEING ESSENTIALLY FREE OF ETHYLENIC UNSATURATION AND CONTAINING FROM ABOUT 25 TO ABOUT 90 MOLE PERCENT OF POLYMERIZED ETHYLENE COMPRISING BLENDING THE COPOLYMER WITH (1) FROM 0.1 TO 10 PARTS PER HUNDRED OF ELASTOMER OF AN ORGANIC PEROXIDE HAVING A DECOMPOSITION TEMPERATURE BETWEEN 100 AND 200*C. AND (2) FROM 0.1 TO 4 PARTS PER HUNDRED OF COPOLYMER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF QUIONES, HYDROQUINNONES, QUINHYDRONE, AND MIXTURES THEREOF, AND VULCANIZING THE BLEND, THE SAID PEROXIDE AND SAID COMPOUND BEING IN PARTS BY WEIGHT PER HUNDRED PARTS BY WEIGHT OF COPOLYMER.
Claim 2
Independent Claim
110 words
A METHOD OF VULCANIZING ELASTOMERIC COPOLYMERS OF MONO-ALPHA-OLEFINS HAVING UP TO 6 CARBON ATOMS, THE COPOLYMER BEING ESSENTIALLY FREE OF ETHYLENIC UNSATURATION AND CONTAINING FROM ABOUT 25 TO ABOUT 90 MOLE PERCENT OF POLYMERIZED ETHYLENE COMPRISING BLENDING THE COPOLYMER WITH (1) FROM 0.1 TO 10 PARTS PER HUNDRED OF ELASTOMER OF AN ORGANIC PEROXIDE HAVING A DECOMPOSITION TEMPERATURE BETWEEN 100 AND 200*C. AND (2) FROM 0.1 TO 4 PARTS PER HUNDRED OF COPOLYMER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF QUIONES, HYDROQUINNONES, QUINHYDRONE, AND MIXTURES THEREOF, AND VULCANIZING THE BLEND, THE SAID PEROXIDE AND SAID COMPOUND BEING IN PARTS BY WEIGHT PER HUNDRED PARTS BY WEIGHT OF COPOLYMER.
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) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |