Patent US3846441A successfully refreshed from Google Patents.
US3846441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,5-disubstituted-3-substituted phenyl hydantoins
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1971-11-29
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Granted: 1974-11-05
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Expires: 1991-11-29
Abstract
Abstract WHEREIN X is hydrogen atom, a halogen atom, nitro, lower alkyl, lower alkoxy, cyano, trifluoromethyl or lower alkoxycarbonyl, R1 and R2 are alkyl having 1 to 6 carbon atoms, lower alkenyl, cyclohexyl, phenyl or benzyl, and n is an integer of 1 to 3, which may be useful as herbicides. A hydantoin derivative having the formula,
Inventors
- 👤 A Mine
- 👤 A Fujinami
- 👤 T Satomi
- 👤 K Tateishi
- 👤 N Kameda
- 👤 N Hino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:46
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C07D233/74
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
6 words
A HYDANTOIN DERIVATIVE HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
A HYDANTOIN DERIVATIVE HAVING THE FORMULA
Claim 3
Dependent Claim
9 words
The compound of claim 1, represented by the formula,
Claim 4
Dependent Claim
5 words
A compound of the formula,
Claim 5
Dependent Claim
5 words
A compound of the formula,
Claim 6
Dependent Claim
5 words
A compound of the formula,
Claim 7
Dependent Claim
5 words
A compound of the formula,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |