Patent US3116268A successfully refreshed from Google Patents.
US3116268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyphosphonamide polymers and copolymers
Assignee: EIDP Inc
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Filing: 1955-12-21
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Granted: 1963-12-31
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Expires: 1975-12-21
Abstract
No abstract record available.
Inventors
- 👤 Farago John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:44
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G73/00; C08L; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A LINEAR POLYPHOSPHONAMIDE CONSISTING ESSENTIALLY OF RECURRING UNITS OF THE FORMULA
Claim 2
Dependent Claim
11 words
A LINEAR POLYPHOSPHONAMIDE CONSISTING ESSENTIALLY OF RECURRING UNITS OF THE FORMULA
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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |