Patent US3264239A successfully refreshed from Google Patents.
US3264239A
Expired / Lapsed
US
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Vulcanizing agent prepared from sulfur, linseed oil and dicyclopentadiene
Assignee: ATK Launch Systems LLC
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Filing: 1963-10-08
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Granted: 1966-08-02
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Expires: 1983-10-08
Abstract
No abstract record available.
Inventors
- 👤 Rosen George
- 👤 Warren D Helmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:13
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08G; C08G75/00; C08G75/14; C08L; C08L21/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
A PROCESS FOR MAKING A VULCANIZING AGENT WHICH COMPRISES PREPARING A MIXTURE OF SULFUR, LINSEED OIL AND DICYCLOPENTADIENE CONTANING FROM 20 TO 100 ATOMS OF SULFUR PER MOLECULE OF DICYCLOPENTADIENE AND HAVING A WEIGHT RATIO OF DICYCLOPENTADIENE TO LINSEED OIL OF AOUT 1:2 TO 3:1, HEATING THE RESULTING MIXTURE AT 125* TO 35* C. FOR AT LEAST 5 HOURS TO FORM AN INTERPOLYMER, AND COOLING AND COMMINUTING THE INTERPOLYMERIC PRODUCT.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |