US3179638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers prepared from vinyl isothiouronium salts and copolymerizable monoethylenically unsaturated monomers
Assignee: EIDP Inc
•
Filing: 1960-11-14
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Granted: 1965-04-20
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Victor E Shashoua
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:17
CPC Classifications
C; C08; C08F; C08F28/00; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A SYNTHETIC POLYMER COMPRISED OF ACRYLONITRILE AND A COPOLYMERIZABLE VINYL MONOMER HAVING THE FORMULA
Claim 2
Dependent Claim
14 words
A SYNTHETIC POLYMER COMPRISED OF ACRYLONITRILE AND A COPOLYMERIZABLE VINYL MONOMER HAVING THE FORMULA
References Cited (Backward Citations)
US2347827A
Cited
US2688010A
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US2655493A
Cited
US2697727A
Cited
US2858297A
Cited
GB843006A
Cited
DE1043633B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |