US3524874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of phenylacrylonitriles
Assignee: Asahi Kasei Corp
•
Filing: 1967-12-20
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Granted: 1970-08-18
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Expires: 1987-12-20
Abstract
No abstract record available.
Inventors
- 👤 Naoya Kominami
- 👤 Hitoshi Nakajima
- 👤 Takeo Kimura
- 👤 Tokio Sakurai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:27
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/08; C07C253/10; B; B01; B01J; B01J31/00; B01J31/16; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/223; B01J31/2239; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/322; B01J2231/70; B01J2231/76; B01J2231/766; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/822; B01J2531/824; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
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) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |