US3053789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solutions of acrylonitrile polymers in phenolsulfonic acids
Assignee: Monsanto Chemicals Ltd
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Filing: 1960-03-11
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Granted: 1962-09-11
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Expires: 1980-03-11
Abstract
No abstract record available.
Inventors
- 👤 Witt Hobson D De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:53
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/097; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38; D01F6/44; D01F6/54; C08J2333/00; C08J2333/18; C08J2333/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A NEW COMPOSITION OF MATTER, COMPRISING A SOLUTION OF FROM 85 TO 95 PERCENT BY WEIGHT OF PARA-PHENOLSULFONIC ACID AND FROM 2 TO 15 PERCENT OF A POLYMER OF AT LEAST 80 PERCENT ACRYLONITRILE AND UP TO 20 PERCENT OF AT LEAST ONE OTHER COPOLYMERIZABLE MONO-OLEFINIC MONOMER.
Claim 2
Dependent Claim
47 words
A NEW COMPOSITION OF MATTER, COMPRISING A SOLUTION OF FROM 85 TO 95 PERCENT BY WEIGHT OF PARA-PHENOLSULFONIC ACID AND FROM 2 TO 15 PERCENT OF A POLYMER OF AT LEAST 80 PERCENT ACRYLONITRILE AND UP TO 20 PERCENT OF AT LEAST ONE OTHER COPOLYMERIZABLE MONO-OLEFINIC MONOMER.
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) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |