US2839571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ester products
Assignee: Millennium Petrochemicals Inc
•
Filing: 1955-08-12
•
Granted: 1958-06-17
•
Expires: 1975-08-12
Abstract
No abstract record available.
Inventors
- 👤 Christian W Johnston
- 👤 Robert A Meara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:53
CPC Classifications
C; C10; C10M; C10M3/00; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
AN ALKYL ESTER OF A MIXTURE OF C10 ISOMERIC ALIPHATIC DIACIDS CONSISTING ESSENTIALLY OF ABOUT 60-88% A-ETHYLSUBERIC ACID, AND THE REMAINDER OF THE DIACIDS CONSISTING OF A MIXTURE OF A,A''-DIETHYLADIPIC ACID AND SEBACIC ACID.
Claim 2
Dependent Claim
34 words
AN ALKYL ESTER OF A MIXTURE OF C10 ISOMERIC ALIPHATIC DIACIDS CONSISTING ESSENTIALLY OF ABOUT 60-88% A-ETHYLSUBERIC ACID, AND THE REMAINDER OF THE DIACIDS CONSISTING OF A MIXTURE OF A,A''-DIETHYLADIPIC ACID AND SEBACIC ACID.
References Cited (Backward Citations)
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US2680713A
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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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |