US4376029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium diboride-graphite composits
Assignee: GREAT LAKES CARBON Corp
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Filing: 1980-09-11
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Granted: 1983-03-08
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Expires: 2000-09-11
Abstract
Abstract A cathode component for a Hall aluminum cell is economically produced from a mixture of a carbon source, preferably calcined petroleum coke, and optionally calcined acicular needle petroleum coke, calcined anthracite coal; a binder such as pitch including the various petroleum and coal tar pitches; titanium dioxide, TiO2; and boric acid, B2O3 or boron carbide, B4C; forming said mixture into shapes and heating to a TiB2-forming temperature.
Inventors
- 👤 Louis A. Joo'
- 👤 Kenneth W. Tucker
- 👤 Frank E. McCown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:03
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/5805; C04B35/58064; C04B35/58071; C04B35/52; C04B35/528; C04B35/532; C25; C25C; C25C3/00; C25C3/06; C25C3/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
67 words
A process for the production of TiB 2 -carbon composite comprised of the steps of mixing and dispersing particulate carbonaceous matter and TiB 2 -forming reactants in a carbon-forming binder to form a plastic mixture, forming a shaped article from said mixture, baking said article at 700° to 1100° C., impregnating said baked article with a carbon-forming binder and rebaking said article to 700° to 1100° C.
Claim 2
Dependent Claim
67 words
A process for the production of TiB 2 -carbon composite comprised of the steps of mixing and dispersing particulate carbonaceous matter and TiB 2 -forming reactants in a carbon-forming binder to form a plastic mixture, forming a shaped article from said mixture, baking said article at 700° to 1100° C., impregnating said baked article with a carbon-forming binder and rebaking said article to 700° to 1100° C.
Claim 3
Dependent Claim
84 words
A process for the production of a TiB 2 -carbon composite article comprised of the steps of mixing and dispersing particulate carbonaceous matter and TiB 2 -forming reactants in a carbon-forming binder to form a plastic mixture, forming a shaped article from said mixture, baking said article to 700° to 1100° C., heating said article to a TiB 2 -forming temperature from 2000° to 3000° C. wherein the composite article is impregnated with a carbon-forming binder and is re-baked to 700° to 1100° C.
Claim 4
Dependent Claim
84 words
A process for the production of a TiB 2 -carbon composite article comprised of the steps of mixing and dispersing particulate carbonaceous matter and TiB 2 -forming reactants in a carbon-forming binder to form a plastic mixture, forming a shaped article from said mixture, baking said article to 700° to 1100° C., heating said article to a TiB 2 -forming temperature from 2000° to 3000° C. wherein the composite article is impregnated with a carbon-forming binder and is re-baked to 700° to 1100° C.
Claim 5
Dependent Claim
91 words
A process for the production of a TiB 2 -carbon composite article comprised of the steps of mixing and dispersing particulate carbonaceous matter and TiB 2 -forming reactants in a carbon-forming binder to form a plastic mixture, forming a shaped article from said mixture, baking said article to 700° to 1100° C., further heating said article to a TiB 2 -forming temperature of 2000° to 3000° C. wherein the composite article is then impregnated with a carbon-forming binder, re-baked to 700° to 1100° C. and re-heated to 2000° to 3000° C.
Claim 6
Dependent Claim
91 words
A process for the production of a TiB 2 -carbon composite article comprised of the steps of mixing and dispersing particulate carbonaceous matter and TiB 2 -forming reactants in a carbon-forming binder to form a plastic mixture, forming a shaped article from said mixture, baking said article to 700° to 1100° C., further heating said article to a TiB 2 -forming temperature of 2000° to 3000° C. wherein the composite article is then impregnated with a carbon-forming binder, re-baked to 700° to 1100° C. and re-heated to 2000° to 3000° C.
References Cited (Backward Citations)
US2799912A
Cited
US3314876A
Cited
US3351429A
Cited
US3202519A
Cited
US3400061A
Cited
US3672936A
Cited
US3676371A
Cited
US3616045A
Cited
GB1289081A
Cited
US4108670A
Cited
US4111765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-07 | 1986-09-06 | 1987-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-07 | 1990-09-06 | 1991-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-07 | 1994-09-06 | 1995-03-08 | $7700.00 | Window Closed / Lapsed |