Patent US4016221A successfully refreshed from Google Patents.
US4016221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact-resistant resin composition
Assignee: Daicel Corp
•
Filing: 1976-01-19
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Granted: 1977-04-05
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Expires: 1996-01-19
Abstract
No abstract record available.
Inventors
- 👤 Teizo Kudo
- 👤 Masanori Itoh
- 👤 Makoto Shiga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:35
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08F279/04; C08L; C08L55/00; C08L55/02; Y; Y10; Y10S; Y10S525/00; Y10S525/942
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) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |