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Patent US3213068A successfully refreshed from Google Patents.
US3213068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of dinitrile oxides and difunctional comonomers having acetylenic and ethylenic unsaturation
Assignee: Wyeth Holdings LLC
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Filing: 1962-04-02
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Granted: 1965-10-19
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Everett J Frazza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:48
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/0605; C08G73/0611
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
15 words
A COMPOSITION COMPRISING A COPOLYMER OF (1) A DINITRILE OXIDE REPRESENTED BY THE GENERAL FORMULA
Claim 2
Dependent Claim
15 words
A COMPOSITION COMPRISING A COPOLYMER OF (1) A DINITRILE OXIDE REPRESENTED BY THE GENERAL FORMULA
Claim 3
Dependent Claim
13 words
A COMPOSITION COMPRISING A COPOLYMER OF (1) A DINITRILE OXIDE HAVING THE FORMULA
Claim 4
Dependent Claim
13 words
A COMPOSITION COMPRISING A COPOLYMER OF (1) A DINITRILE OXIDE HAVING THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |