US3004953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction products of phenols and diisopropenylbenzene
Assignee: Dow Chemical Co
•
Filing: 1959-03-02
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Granted: 1961-10-17
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Expires: 1979-03-02
Abstract
No abstract record available.
Inventors
- 👤 Lawrence F Sonnabend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:14
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G8/00; C08G8/28; C08G8/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE POLYMERIC HEAT AND ACID REACTING ALKYLATION CATALYST CATALYZED CONDENSATION PRODUCT OF 1 MOLE PROPORTION OF DIISOPROPENYLBENZENE TO 0.8-1.25 MOLE PROPORTION OF AT LEAST ONE PHENOL OF THE GROUP CONSISTING OF PHENOL, ALKYLPHENOLS, AND BIS-PHENOLS HAVING AT LEAST TWO AVAILABLE REACTION SITES PER MOLECULE WHEREIN ALKYL IS INCLUSIVE OF 1 TO 4 CARBON ALKYL GROUPS.
Claim 2
Dependent Claim
55 words
THE POLYMERIC HEAT AND ACID REACTING ALKYLATION CATALYST CATALYZED CONDENSATION PRODUCT OF 1 MOLE PROPORTION OF DIISOPROPENYLBENZENE TO 0.8-1.25 MOLE PROPORTION OF AT LEAST ONE PHENOL OF THE GROUP CONSISTING OF PHENOL, ALKYLPHENOLS, AND BIS-PHENOLS HAVING AT LEAST TWO AVAILABLE REACTION SITES PER MOLECULE WHEREIN ALKYL IS INCLUSIVE OF 1 TO 4 CARBON ALKYL GROUPS.
References Cited (Backward Citations)
US2224837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |