US2735872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tris-phenols
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:23
CPC Classifications
C; C07; C07C; C07C39/00; C07C39/24; C07C39/367; C07C37/00; C07C37/11; C07C37/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A 4 - NONYL - A,A'' - BIS(5 -HALO -3-METHYL-2HYDROXY-PHENYL)-2,6-XYLENOL WHEREIN THE HALOGEN SUBSTITUENT IN THE 5-POSITION OF THE RESPECTIVE TERMINAL PHENYL NUCLEI IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE.
Claim 2
Dependent Claim
33 words
A 4 - NONYL - A,A'' - BIS(5 -HALO -3-METHYL-2HYDROXY-PHENYL)-2,6-XYLENOL WHEREIN THE HALOGEN SUBSTITUENT IN THE 5-POSITION OF THE RESPECTIVE TERMINAL PHENYL NUCLEI IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE.
References Cited (Backward Citations)
US2440909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |