US3172774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming composite graphite coated article
Assignee: —
•
Filing: —
•
Granted: 1965-03-09
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Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:49
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A DEPOSITION METHOD WHICH COMPRISES PROVIDING A CHAMBER, POSITIONING AT LEAST ONE MEMBER WITHIN SAID CHAMBER, FLOWING A CARBON VAPOR AT A TEMPERATURE IN THE RANGE OF 1450*C. TO 2000*C. THROUGH SAID CHAMBER, MAINTAINING THE PRESSURE WITHIN SAID CHAMBER AT A PRESSURE IN THE RANGE OF .2 CENTIMETER OF MERCURY TO 70 CENTIMETERS, OF MERCURY AND DEPOSITING A PYROLYTIC GRAPHITE COATING WITH UNIFORM SOOT DEPOSITS ON SAID MEMBER TO FORM A COMPOSITE ARTICLE.
Claim 2
Dependent Claim
73 words
A DEPOSITION METHOD WHICH COMPRISES PROVIDING A CHAMBER, POSITIONING AT LEAST ONE MEMBER WITHIN SAID CHAMBER, FLOWING A CARBON VAPOR AT A TEMPERATURE IN THE RANGE OF 1450*C. TO 2000*C. THROUGH SAID CHAMBER, MAINTAINING THE PRESSURE WITHIN SAID CHAMBER AT A PRESSURE IN THE RANGE OF .2 CENTIMETER OF MERCURY TO 70 CENTIMETERS, OF MERCURY AND DEPOSITING A PYROLYTIC GRAPHITE COATING WITH UNIFORM SOOT DEPOSITS ON SAID MEMBER TO FORM A COMPOSITE ARTICLE.
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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |