US3539475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacture of uniform rubber blends of different kinds
Assignee: Zeon Corp
•
Filing: 1967-07-28
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Granted: 1970-11-10
•
Expires: 1987-07-28
Abstract
No abstract record available.
Inventors
- 👤 Akira Yoshioka
- 👤 Taiji Katsuyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:48
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; C; C08; C08J; C08J3/00; C08J3/005; C08L; C08L21/00; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22; C08L9/00; C08L9/06; C08J2321/00; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA702841A
Cited
US3304281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |