Patent US3933828A successfully refreshed from Google Patents.
US3933828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quinone derivatives and compositions containing the same
Assignee: Shionogi and Co Ltd
•
Filing: 1973-11-29
•
Granted: 1976-01-20
•
Expires: 1993-11-29
Abstract
Abstract Novel quinone derivatives having plant-growth regulating activity and being prepared by light irradiation or catalylic reduction from isoxazole derivatives, and compositions containing the said quinone derivatives.
Inventors
- 👤 Hideo Kano
- 👤 Masaru Ogata
- 👤 Hisajiro Yukinaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:48
CPC Classifications
A; A01; A01N; A01N35/00; A01N35/08; A01N35/10; A01N43/00; A01N43/34; A01N43/40; A01N43/72; A01N43/88; A01N43/90
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
3 words
The compound 6-hydroxy-7-benzimidoyl-5,8-dihydroquinoline-5,8-dione.
Claim 2
Dependent Claim
3 words
The compound 6-hydroxy-7-benzimidoyl-5,8-dihydroquinoline-5,8-dione.
Claim 3
Dependent Claim
3 words
The compound 6-benzimidoyl-7-hydroxy-5,8-dihydroquinoline-5,8-dione.
Claim 4
Dependent Claim
3 words
The compound 6-benzimidoyl-7-hydroxy-5,8-dihydroquinoline-5,8-dione.
References Cited (Backward Citations)
US3005824A
Cited
AT221311B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |