US2556830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graphite anode
Assignee: Dow Chemical Co
•
Filing: 1947-01-20
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Granted: 1951-06-12
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Expires: 1967-01-20
Abstract
No abstract record available.
Inventors
- 👤 Richard I Thrune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:59
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/042; C25B11/043; C25B11/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A MOLDED GRAPHITE ATICLE THE PARTICLES OF WHICH ARE BONDED WITH A THERMO-SETTING PHENOLFORMALDEHYDE RESIN IN A PROPORTION F ABOUT 9 TO 20 PER CENT BY WEIGHT, THE IMPROVEMENT WHICH COMPRISES INCLUDING THEREIN FROM 0.75 TO 1.5 PER CENT BY WEIGHT OF A MODIFYING AGENT OF A TRIPARATERTIARY BUTYL ARYL PHOSPHATE WHEREIN THE ARYL RADICALS ARE OF TEH BENZENE SERIES SELECTED FROM THE GROUP CONSISTING OF TRI-(PARA-TERTIARY-BUTYLPHENYL) PHOSPHATE OF TRI-(PARA-TERTIARY-BUTYLPHENYL) MONO-(5-TERTIARY-BUTYL-2-XENYL) PHOSPHATE.
Claim 2
Dependent Claim
73 words
IN A MOLDED GRAPHITE ATICLE THE PARTICLES OF WHICH ARE BONDED WITH A THERMO-SETTING PHENOLFORMALDEHYDE RESIN IN A PROPORTION F ABOUT 9 TO 20 PER CENT BY WEIGHT, THE IMPROVEMENT WHICH COMPRISES INCLUDING THEREIN FROM 0.75 TO 1.5 PER CENT BY WEIGHT OF A MODIFYING AGENT OF A TRIPARATERTIARY BUTYL ARYL PHOSPHATE WHEREIN THE ARYL RADICALS ARE OF TEH BENZENE SERIES SELECTED FROM THE GROUP CONSISTING OF TRI-(PARA-TERTIARY-BUTYLPHENYL) PHOSPHATE OF TRI-(PARA-TERTIARY-BUTYLPHENYL) MONO-(5-TERTIARY-BUTYL-2-XENYL) PHOSPHATE.
References Cited (Backward Citations)
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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) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |