US3235614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of exo-dicyclopentadiene
Assignee: Union Carbide Corp
•
Filing: 1961-07-18
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Granted: 1966-02-15
•
Expires: 1981-07-18
Abstract
No abstract record available.
Inventors
- 👤 Henry E Fritz
- 👤 David W Peck
- 👤 Marion A Eccles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:56
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/50; C07C5/00; C07C5/22; C07C2603/00; C07C2603/56; C07C2603/58; C07C2603/60; C07C2603/66; C07C2603/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE PROCESS FOR PRODUCING EXO-DICYCLOPENTADIENE WHICH COMPRISES MAINTAINING AT FROM 200*C. TO 350*C. AND AT A PRESSURE OF FROM 50 TO 10,000 P.S.I.G. AN ESSENTIALLY LIQUID PHASE MIXTURE CONTAINING (A) A STARTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF ENDO-DICYCLOPENTADIENE AND CYCLOPENTADIENE AND (B) AN INERT ORGANIC SOLVENT, IN THE SUBSTANTIAL ABSENCE OF OTHER OLEFINIC COMPOUNDS.
Claim 2
Dependent Claim
56 words
THE PROCESS FOR PRODUCING EXO-DICYCLOPENTADIENE WHICH COMPRISES MAINTAINING AT FROM 200*C. TO 350*C. AND AT A PRESSURE OF FROM 50 TO 10,000 P.S.I.G. AN ESSENTIALLY LIQUID PHASE MIXTURE CONTAINING (A) A STARTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF ENDO-DICYCLOPENTADIENE AND CYCLOPENTADIENE AND (B) AN INERT ORGANIC SOLVENT, IN THE SUBSTANTIAL ABSENCE OF OTHER OLEFINIC COMPOUNDS.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |