US3520770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester composite filaments and method of producing same
Assignee: Teijin Ltd
•
Filing: 1966-07-05
•
Granted: 1970-07-14
•
Expires: 1986-07-05
Abstract
No abstract record available.
Inventors
- 👤 Takeo Shima
- 👤 Yukiharu Asami
- 👤 Yoshiaki Hori
- 👤 Takanori Urasaki
- 👤 Masanori Masuda
- 👤 Takao Adachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/14; C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C08L; C08L67/00; C08L67/02; Y; Y10; Y10S; Y10S57/00; Y10S57/905; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2924; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/2973
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2936296A
Cited
US2895946A
Cited
US2915486A
Cited
US3033824A
Cited
US3039524A
Cited
US3345429A
Cited
US3381058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |