US2671773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of thiophene-modified copolymers of maleic anhydride with aliphatic vinyl compounds
Assignee: ExxonMobil Oil Corp
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Filing: 1951-04-03
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Granted: 1954-03-09
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Expires: 1971-04-03
Abstract
No abstract record available.
Inventors
- 👤 John J Giammaria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:12
CPC Classifications
C; C08; C08F; C08F22/00; C08F22/04; C10; C10M; C10M2221/00; C10M2221/02; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
AS A NEW COMPOSITION OF MATTER, THE PRODUCT OBTAINED BY (1) COPOLYMERIZING 1 MOLE OF MALEIC ANHYDRIDE WITH ABOUT 1 MOLE OF AN ALIPHATIC VINYL COMPOUND IN THE PRESENCE OF FROM 0.25 MOLE TO ABOUT 6 MOLES OF A THIOPHENE COMPOUND SELECTED FROM THE GROUP CONSISTING OF THIOPHENE AND ALKYL THIOPHENES, TO FORM A THIOPHENE-MODIFIED COPOLYMER PRODUCT AND (2) REACTING THE COPOLYMER PRODUCT WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) PRIMARY, NORMAL, SATURATED, ALIPHATIC ALCHOLOS HAVING FROM ABOUT 12 TO ABOUT 18 CARBON ATOMS, (B) PRIMARY AND SECONDARY, SATURATED, ALIPHATIC AMINES HAVING FROM ABOUT 12 TO ABOUT 18 CARBON ATOMS AND (C) A MIXTURE OF PRIMARY, SATURATED, ALIPHATIC AMINES CONTAINING FROM 8 TO 18 CARBON ATOMS AND HAVING AN AVERAGE OF ABOUT 12 CARBON ATOMS PER MOLECULE.
Claim 2
Dependent Claim
130 words
AS A NEW COMPOSITION OF MATTER, THE PRODUCT OBTAINED BY (1) COPOLYMERIZING 1 MOLE OF MALEIC ANHYDRIDE WITH ABOUT 1 MOLE OF AN ALIPHATIC VINYL COMPOUND IN THE PRESENCE OF FROM 0.25 MOLE TO ABOUT 6 MOLES OF A THIOPHENE COMPOUND SELECTED FROM THE GROUP CONSISTING OF THIOPHENE AND ALKYL THIOPHENES, TO FORM A THIOPHENE-MODIFIED COPOLYMER PRODUCT AND (2) REACTING THE COPOLYMER PRODUCT WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) PRIMARY, NORMAL, SATURATED, ALIPHATIC ALCHOLOS HAVING FROM ABOUT 12 TO ABOUT 18 CARBON ATOMS, (B) PRIMARY AND SECONDARY, SATURATED, ALIPHATIC AMINES HAVING FROM ABOUT 12 TO ABOUT 18 CARBON ATOMS AND (C) A MIXTURE OF PRIMARY, SATURATED, ALIPHATIC AMINES CONTAINING FROM 8 TO 18 CARBON ATOMS AND HAVING AN AVERAGE OF ABOUT 12 CARBON ATOMS PER MOLECULE.
References Cited (Backward Citations)
US2047398A
Cited
US2366517A
Cited
US2505204A
Cited
US2454284A
Cited
US2475409A
Cited
US2540794A
Cited
US2600798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |