US3412191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing artificial fibers
Assignee: Mitsubishi Chemical Corp
•
Filing: 1965-10-22
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Granted: 1968-11-19
•
Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Kitajima Joichi
- 👤 Kikuchi Shigeru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:17
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; D01D; D01D5/00; D01D5/06; D01D5/28; D01D5/30; D01F6/58; D01F6/70; Y; Y10; Y10S; Y10S425/00; Y10S425/217
Claims Analysis
Total Claims: 0
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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) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |