US3062800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenated cyclopentadiene polymers
Assignee: Velsicol Chemical LLC
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Filing: 1960-01-14
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Granted: 1962-11-06
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Expires: 1980-01-14
Abstract
No abstract record available.
Inventors
- 👤 Israel J Dissen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:28
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR THE PRODUCTION OF HYDROGENATED CYCLOPENTADIENE POLYMER WHICH COMPRISES HYDROGENATING A BENZENE-SOLUBLE, CATALYTIC HOMOPOLYMER OF CYCLOPENTADIENE HAVING 1,4 LINKAGES WITH HYDROGEN IN THE PRESENCE OF PALLADIUM CATALYST AT A TEMPERATURE ABOVE ABOUT 25* C. UNTIL A MINIMUM OF 60% OF THE UNSATURATION OF THE INITIAL POLYCYCLOPENTADIENE REACTANT HAS BEEN HYDROGENATED.
Claim 2
Dependent Claim
52 words
A PROCESS FOR THE PRODUCTION OF HYDROGENATED CYCLOPENTADIENE POLYMER WHICH COMPRISES HYDROGENATING A BENZENE-SOLUBLE, CATALYTIC HOMOPOLYMER OF CYCLOPENTADIENE HAVING 1,4 LINKAGES WITH HYDROGEN IN THE PRESENCE OF PALLADIUM CATALYST AT A TEMPERATURE ABOVE ABOUT 25* C. UNTIL A MINIMUM OF 60% OF THE UNSATURATION OF THE INITIAL POLYCYCLOPENTADIENE REACTANT HAS BEEN HYDROGENATED.
References Cited (Backward Citations)
US2319271A
Cited
US2394816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |