US3239363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of isomeric dicarboxynaphthalenes
Assignee: Marathon Oil Co
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Filing: 1962-10-05
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Granted: 1966-03-08
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Expires: 1982-10-05
Abstract
No abstract record available.
Inventors
- 👤 David N Burdge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:03
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
46 words
A PLASTICIZER COMPOSITION FOR POLYVINYL CHLORIDE CONSISTING OF ALKYL DI-ESTERS OF A MIXTURE DICARBOXYNAPHTHALENES HAVING ONLY CARBOXYL SUBSTITUENTS ON THE NAPHTHALENE RING AND DERIVED FROM A MIXTURE OFDIMETHYLNAPHTHALENES, IN WHICH THE ALKYL SUBSTITUENTS CONTAIN FROM 1 TO 18 CARBON ATOMS INCLUDING STRAIGHT AND BRANCHED CHAIN GROUPS.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |