US2777857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methylene-1-bis-4, 5-dihydroxytetrahydro-3-hydroxymethylimidazols
Assignee: Phrix Werke AG
•
Filing: 1954-12-17
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Granted: 1957-01-15
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Expires: 1974-12-17
Abstract
No abstract record available.
Inventors
- 👤 Konig Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:52
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/04; C07D233/28; C07D233/30; C07D233/42; C07D233/40; D; D06; D06M; D06M13/00; D06M13/322; D06M13/35; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
AS A NEW CHEMICAL COMPOUND, A MEHTYLENE-1-BIS4,5-DIHYDROXY-TETRAHYDRO-3-HYDROXYMETHYLIMIDAZOL COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
11 words
AS A NEW CHEMICAL COMPOUND, A MEHTYLENE-1-BIS4,5-DIHYDROXY-TETRAHYDRO-3-HYDROXYMETHYLIMIDAZOL COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2574114A
Cited
US2613210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |