Patent US2723244A successfully refreshed from Google Patents.
US2723244A
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Diaminotriazine-diamine condensation polymers and preparation of same
Assignee: EIDP Inc
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Filing: 1952-01-14
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Granted: 1955-11-08
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Expires: 1972-01-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert Michael Joyce
- 👤 Roland John Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:23
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/0622; C08G73/0638; C08G73/0644; D; D01; D01F; D01F6/00; D01F6/58; D01F6/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A LINEAR CONDENSATION POLYMER ADAPTED TO BE FORMED INTO FILMS AND FIBERS, SAID POLYMER ESSENTIALLY CONSISTING OF INTRACHAIN UNITS HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
23 words
A LINEAR CONDENSATION POLYMER ADAPTED TO BE FORMED INTO FILMS AND FIBERS, SAID POLYMER ESSENTIALLY CONSISTING OF INTRACHAIN UNITS HAVING THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2467523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |