US2779764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated hydantoins
Assignee: Drug Res Inc
•
Filing: 1954-06-22
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Granted: 1957-01-29
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Expires: 1974-06-22
Abstract
No abstract record available.
Inventors
- 👤 Laurene O Paterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:30
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04; C07D207/00; C07D207/46; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C07D233/80; C07D233/82; C11; C11D; C11D3/00; C11D3/395; C11D3/3955; D; D06; D06L; D06L4/00; D06L4/20; D06L4/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AN N-BROMO-N-CHLORO-5,5-DISUBSTITUTED HYDANTOIN IN WHICH ONE SUBSTITUENT IN THE 5 POSITION IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, A LOWER ALKYL RADICAL AND A PHENYL RADICAL AND IN WHICH THE OTHER SUBSTITUENT IN THE 5 POSITION IS SELECTED FROM THE GROUP CONSISTING OF A LOWER ALKYL RADICAL AND A PHENYL RADICAL.
Claim 2
Dependent Claim
52 words
AN N-BROMO-N-CHLORO-5,5-DISUBSTITUTED HYDANTOIN IN WHICH ONE SUBSTITUENT IN THE 5 POSITION IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, A LOWER ALKYL RADICAL AND A PHENYL RADICAL AND IN WHICH THE OTHER SUBSTITUENT IN THE 5 POSITION IS SELECTED FROM THE GROUP CONSISTING OF A LOWER ALKYL RADICAL AND A PHENYL RADICAL.
References Cited (Backward Citations)
US2430233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |