US3457047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing cellulose derivatives and the like
Assignee: Shikoku Chemicals Corp
•
Filing: 1966-06-21
•
Granted: 1969-07-22
•
Expires: 1986-06-21
Abstract
No abstract record available.
Inventors
- 👤 Kenji Tokimatsu
- 👤 Hachiro Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:54
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/02; C08B11/04; C08B11/10; C08B11/12; B; B01; B01F; B01F25/00; B01F25/70; B01F25/74; B01F25/743; C08B17/00; C08B17/06; Y; Y10; Y10S; Y10S159/00; Y10S159/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE838593C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |