Patent US3258450A successfully refreshed from Google Patents.
US3258450A
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Process for making phenol modified polydiene resins
Assignee: Interchemical Corp
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Filing: 1962-04-27
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Granted: 1966-06-28
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 Eli J Aronoff
- 👤 Henry B Yuska
- 👤 Franco Guy J Del
- 👤 Anthony M Fusco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:39
CPC Classifications
C; C08; C08L; C08L21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR PRODUCING RESINS WHICH COMPRISES ALKYLATING (A) A PHENOL MATERIAL WITH (B) A POLYMER CONTAINING MORE THAN 5 REPEATING UNITS OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENE, LOWER ALKYL SUBSTITUTED BUTADIENE AND PHENYL SUBSTITUTED BUTADIENE IN THE PRESENCE OF A MIXTURE OF ACTIVATED CLAY AND SULFURIC ACID, SAID RESIN HAVING A SOFTENING POINT BELOW 22*C.
Claim 2
Dependent Claim
60 words
A PROCESS FOR PRODUCING RESINS WHICH COMPRISES ALKYLATING (A) A PHENOL MATERIAL WITH (B) A POLYMER CONTAINING MORE THAN 5 REPEATING UNITS OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENE, LOWER ALKYL SUBSTITUTED BUTADIENE AND PHENYL SUBSTITUTED BUTADIENE IN THE PRESENCE OF A MIXTURE OF ACTIVATED CLAY AND SULFURIC ACID, SAID RESIN HAVING A SOFTENING POINT BELOW 22*C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |