US3225003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear copolyester of hydroquinone with a mixture of hexahydroisophthalic and hexahydroterephthalic acids
Assignee: EIDP Inc
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Filing: 1962-01-29
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Granted: 1965-12-21
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Expires: 1982-01-29
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Macon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:55
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/199; C08G63/19; C08G63/191
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
THE FIBER-FORMING POLYMERIC LINEAR COPOLYESTER CONSISTING ESSENTIALLY OF POLY(PHENYLENE HEXAHYDROISOPHTALATE-HEXAHYDROTEREPHTHALATE).
Claim 2
Dependent Claim
10 words
THE FIBER-FORMING POLYMERIC LINEAR COPOLYESTER CONSISTING ESSENTIALLY OF POLY(PHENYLENE HEXAHYDROISOPHTALATE-HEXAHYDROTEREPHTHALATE).
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |