US3361729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene composition
Assignee: Mitsubishi Chemical Corp
•
Filing: 1964-06-02
•
Granted: 1968-01-02
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Expires: 1984-06-02
Abstract
No abstract record available.
Inventors
- 👤 Takashima Naoichi
- 👤 Kuroda Toshihiko
- 👤 Higuchi Yasuhiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:36
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/092; C08K3/00; C08K3/18; C08K3/24; C08K5/0091; C08K5/098
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3226351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |