US3208870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbide coatings for graphite
Assignee: Individual
•
Filing: 1956-12-31
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Granted: 1965-09-28
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Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Filmore F Criss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:12
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/5053; C04B41/5057; C04B41/80; C04B41/81; C04B41/85; C04B41/87; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A METHOD OF COATING A GRAPHIC SURFACE WITH A METAL CARBIDE COMPRISING THE STEPS OF PREPARING A METAL OXIDE IN POWDER FORM, MIXING SAID OXIDE WITH AN ORGANIC FILLER SELECTED FROM THE GROUP CONSISTING OF COLLODION AND LACQUER, THEREBY FORMING A PAINT, PAINTING THE SURFACE OF SAID GRAPHITE WITH SAID PAINT, PLACING SAID PAINTED GRAHITE PIECE IN A FURNACE HAVING AN INERT, ATMOSPHERE THEREIN, HEATING SAID GRAPHIC PIECE IN SAID INERT ATMOSPHERE IN SAID FURNACE TO ABOUT 2300*C., SAID OXIDE SELECTED FROM THE CLASS CONSISTING OF COLUMBIUM OXIDE AND TANTALUM OXIDE.
Claim 2
Independent Claim
91 words
A METHOD OF COATING A GRAPHIC SURFACE WITH A METAL CARBIDE COMPRISING THE STEPS OF PREPARING A METAL OXIDE IN POWDER FORM, MIXING SAID OXIDE WITH AN ORGANIC FILLER SELECTED FROM THE GROUP CONSISTING OF COLLODION AND LACQUER, THEREBY FORMING A PAINT, PAINTING THE SURFACE OF SAID GRAPHITE WITH SAID PAINT, PLACING SAID PAINTED GRAHITE PIECE IN A FURNACE HAVING AN INERT, ATMOSPHERE THEREIN, HEATING SAID GRAPHIC PIECE IN SAID INERT ATMOSPHERE IN SAID FURNACE TO ABOUT 2300*C., SAID OXIDE SELECTED FROM THE CLASS CONSISTING OF COLUMBIUM OXIDE AND TANTALUM OXIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |