US3230201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers containing sulfonic acid groups
Assignee: Gevaert Photo Producten NV
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Filing: 1961-05-31
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Granted: 1966-01-18
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Expires: 1981-05-31
Abstract
No abstract record available.
Inventors
- 👤 Hart Rene Maurice
- 👤 Cat Arthur Henri De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:22
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/12; C08F28/00; C08F8/44; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/20; C08F2810/50
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
77 words
A PROCESS FOR THE MANUFACTURE OF POLYMERIC SUBSTANCES BEARING SULFONIC ACID GROUPS COMPRISING THE STEPS OF REACTING A POLYMERIC SUBSTANCE CONTAINING REACTIVE GROUPS SELECTED FROM THE GROUP CONSISTING OF CARBOXY, HYDROXY AND AMINO RADICALS WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF ARYL AMINO SULFONYL FLUORIDE, FLUOROSULFONYL BENZYL ALCOHOL AND FLUOROSULFONYL BENZOYL CHLORIDE AND HYDROLYSING THE OBTAINED POLYMERIC SUBSTANCE BEARING ARYL SULFONYL FLUORIDE GROUPS IN AN ALKALINE MEDIUM TO A POLYMERIC SUBSTANCE HAVING SULFONIC ACID GROUPS.
Claim 2
Dependent Claim
77 words
A PROCESS FOR THE MANUFACTURE OF POLYMERIC SUBSTANCES BEARING SULFONIC ACID GROUPS COMPRISING THE STEPS OF REACTING A POLYMERIC SUBSTANCE CONTAINING REACTIVE GROUPS SELECTED FROM THE GROUP CONSISTING OF CARBOXY, HYDROXY AND AMINO RADICALS WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF ARYL AMINO SULFONYL FLUORIDE, FLUOROSULFONYL BENZYL ALCOHOL AND FLUOROSULFONYL BENZOYL CHLORIDE AND HYDROLYSING THE OBTAINED POLYMERIC SUBSTANCE BEARING ARYL SULFONYL FLUORIDE GROUPS IN AN ALKALINE MEDIUM TO A POLYMERIC SUBSTANCE HAVING SULFONIC ACID GROUPS.
Claim 3
Dependent Claim
44 words
POLYMERIC SUBSTANCES BEARING SULFONIC ACID GROUPS WHICH ARE PREPARED ACCORDING TO THE PROCESS DESCRIBED IN CLAIM 1 WHEREIN THE SULFONYL FLUORIDE BEARING GROUP IS LINKED TO THE POLYMER THROUGH A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN AMIDE RADICAL AND AN ESTER RADICAL.
References Cited (Backward Citations)
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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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |