Patent US2864868A successfully refreshed from Google Patents.
US2864868A
Expired / Lapsed
US
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Cyclopentenyl phenols and method
Assignee: —
•
Filing: —
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Granted: 1958-12-16
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Expires: 1975-12-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:31
CPC Classifications
C; C07; C07C; C07C39/00; C07C39/12; C07C39/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A METHOD OF PREPARING CYCLOPENTENYL DERIVATIVES OF A PHENOLIC COMPOUND SELECTRED FEOM THE CLASS CONSISTING OF PHENOL, P-CRESOL AND GUAIACOL, WHICH COMPRISES RECTIONG CYCLOPENTADINE WITH SAID PHENOLIC COMPOUND AT A TEMERATURE OF ABOUT 0*C., AND IN THE PRESENCE OF A CATALYST SELECTED FROM THE CLASS CONSISTING OF ALUMINUM CHLORIDE, FERRIC CHLORIDE, ANTIMONY PENTACHLORIDE, BORON TRIFLUORIDE ZINC CHLORIDE TITANIUM CHLORIDE, HYDROFLUORIC ACID, SULFURIC ACID, PHOSPHORIC ACID, PHOSPHOROUS PENTOXIDE, STANNIC CHLORIDE, BISMUTH CHLORIDE, TELLURIUM DICHLORDE, AND TELLURIUM TETRACHLORIDE, AND RE COVERING SAID CYCLOPENTENYL DERIVATIVES FROM THE REACTION MIXTURE
Claim 2
Independent Claim
86 words
A METHOD OF PREPARING CYCLOPENTENYL DERIVATIVES OF A PHENOLIC COMPOUND SELECTRED FEOM THE CLASS CONSISTING OF PHENOL, P-CRESOL AND GUAIACOL, WHICH COMPRISES RECTIONG CYCLOPENTADINE WITH SAID PHENOLIC COMPOUND AT A TEMERATURE OF ABOUT 0*C., AND IN THE PRESENCE OF A CATALYST SELECTED FROM THE CLASS CONSISTING OF ALUMINUM CHLORIDE, FERRIC CHLORIDE, ANTIMONY PENTACHLORIDE, BORON TRIFLUORIDE ZINC CHLORIDE TITANIUM CHLORIDE, HYDROFLUORIC ACID, SULFURIC ACID, PHOSPHORIC ACID, PHOSPHOROUS PENTOXIDE, STANNIC CHLORIDE, BISMUTH CHLORIDE, TELLURIUM DICHLORDE, AND TELLURIUM TETRACHLORIDE, AND RE COVERING SAID CYCLOPENTENYL DERIVATIVES FROM THE REACTION MIXTURE
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) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |