US3580874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeable pill-resistant polyesters
Assignee: Badische Corp
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Filing: 1969-07-16
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Granted: 1971-05-25
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Expires: 1989-07-16
Abstract
Abstract IMPROVED POLYESTERS CONSIST OF THE CONDENSATION PRODUCT OF A POLYHYDRIC ALCOHOL, A MAJOR PROPORTION OF A FIRST DIBASIC ACID, A MINOR PROPORTION OF A LONG CHAIN ALIPHATIC DIBASIC ACID HAVING 28-44 CARBON ATOMS, AND A MINOR PROPORTION OF A LONG CHAIN POLYFUNCTIONAL COMPOUND HAVING 30-60 CARBON ATOMS AND AT LEAST THREE REACTIVE SITES.
Inventors
- 👤 Akihiro Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:53
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C08G63/46; C08G63/52; C08G63/54; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 0
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |