US2617810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibiting oxidation of o-hetero-cyclic compounds
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1949-12-05
•
Granted: 1952-11-11
•
Expires: 1969-12-05
Abstract
No abstract record available.
Inventors
- 👤 Taylor Arthur William Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:36
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/04; C07D307/06; C07D307/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A NEW UNDISCOLOURED COMPOSITION OF MATTER COMPRISING A COMPOUND SELECTED FROM THE GROUP CONSISTING A TETRAPYDROFURAN, TETRAHYDROPYRAN, DIOXANE AND THEIR ALKYL SUBSTITUTED DERIVATIVES AND, AS AN INHIBITOR OF PEROXIDATION, A PHENOL HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
35 words
A NEW UNDISCOLOURED COMPOSITION OF MATTER COMPRISING A COMPOUND SELECTED FROM THE GROUP CONSISTING A TETRAPYDROFURAN, TETRAHYDROPYRAN, DIOXANE AND THEIR ALKYL SUBSTITUTED DERIVATIVES AND, AS AN INHIBITOR OF PEROXIDATION, A PHENOL HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2080142A
Cited
US2114832A
Cited
US2248828A
Cited
US2257869A
Cited
US2462426A
Cited
US2470447A
Cited
US2489260A
Cited
US2476833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |