Patent US2577041A successfully refreshed from Google Patents.
US2577041A
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Reaction products of (a) copolymers of maleic anhydride and monovinyl compounds and (b) chlorophenols or nitrophenols
Assignee: IND RES INST OF UNIVERSITY
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Filing: 1948-04-10
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Granted: 1951-12-04
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Expires: 1968-04-10
Abstract
No abstract record available.
Inventors
- 👤 Raymond B Seymour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:49
CPC Classifications
A; A01; A01N; A01N59/00; A01N59/16; A01N59/18; A01N59/20; C; C08; C08F; C08F291/00; C08F291/06; C08F8/00; C08F8/14; C08F8/18; C08F8/30; C08F8/32; C08F8/44; C14; C14C; C14C3/00; C14C3/02; C14C3/08; C14C3/26; D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M16/00; B; B27; B27K; B27K3/00; B27K3/02; B27K3/15; Y; Y10; Y10S; Y10S260/00; Y10S260/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE PROCESS OF FORMING A REACTION PRODUCT OF A COPOLYMER OF MALEIC ANHYDRIDE AND A COMPOUND HAVING A SINGLE VINYL GROUP TO OBTAIN A FUNGICIDE, WHICH COMPRISES MIXING INTO A SOLUTION CONTAINING THE DISSOLVED COPOLYMER SUBSTANTIALLY EQUIMOLAR PROPORTIONS, RELATIVE TO THE MALEIC ANHYDRIDE COMPONENT OF THE COPOLYMER, OF A MONOHYDRIC PHENOLIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF CHLOROPHENOLS AND MONO-NITROPHENOLS HAVING BESIDES THE PHENOLIC HYDROXYL GROUP NO REACTIVE GROUP OTHER THAN CHLORINE AND NITRO, RESPECTIVELY, AND HEATING THE MIXTURE AT AN ELEVATED TEMPERATURE TO EFFECT REACTION BETWEEN SAID COPOLYMER AND SAID PHENOLIC COMPOUND.
Claim 2
Dependent Claim
94 words
THE PROCESS OF FORMING A REACTION PRODUCT OF A COPOLYMER OF MALEIC ANHYDRIDE AND A COMPOUND HAVING A SINGLE VINYL GROUP TO OBTAIN A FUNGICIDE, WHICH COMPRISES MIXING INTO A SOLUTION CONTAINING THE DISSOLVED COPOLYMER SUBSTANTIALLY EQUIMOLAR PROPORTIONS, RELATIVE TO THE MALEIC ANHYDRIDE COMPONENT OF THE COPOLYMER, OF A MONOHYDRIC PHENOLIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF CHLOROPHENOLS AND MONO-NITROPHENOLS HAVING BESIDES THE PHENOLIC HYDROXYL GROUP NO REACTIVE GROUP OTHER THAN CHLORINE AND NITRO, RESPECTIVELY, AND HEATING THE MIXTURE AT AN ELEVATED TEMPERATURE TO EFFECT REACTION BETWEEN SAID COPOLYMER AND SAID PHENOLIC COMPOUND.
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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) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |