US2584968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of methacrylanilide with higher alkyl acrylic esters
Assignee: EIDP Inc
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Filing: 1950-06-24
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Granted: 1952-02-12
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Expires: 1970-06-24
Abstract
No abstract record available.
Inventors
- 👤 Williard E Catlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:18
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1812; C08F220/1806; C08F220/1808; C08F220/1809; C08F220/1811
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A COPOLYMER OF METHACRYLANILIDE AND AN ALKYL ESTER OF AN ACID FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACIDS, THE ALKYL GROUP IN SAID ESTERS CONTAINING FROM 8 TO 18 CARBON ATOMS, INCLUSIVE, WITH AT LEAST 8 OF SAID CARBON ATOMS BEING IN A STRAIGHT CHAIN AND SAID METHACRYLANILIDE AMOUNTING TO 2% TO 25% BY WEIGHT OF SAID COPOLYMER.
Claim 2
Dependent Claim
60 words
A COPOLYMER OF METHACRYLANILIDE AND AN ALKYL ESTER OF AN ACID FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACIDS, THE ALKYL GROUP IN SAID ESTERS CONTAINING FROM 8 TO 18 CARBON ATOMS, INCLUSIVE, WITH AT LEAST 8 OF SAID CARBON ATOMS BEING IN A STRAIGHT CHAIN AND SAID METHACRYLANILIDE AMOUNTING TO 2% TO 25% BY WEIGHT OF SAID COPOLYMER.
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) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |