US3206331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for coating articles with pyrolitic graphite
Assignee: General Electric Co
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Filing: 1961-04-25
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Granted: 1965-09-14
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Expires: 1981-04-25
Abstract
No abstract record available.
Inventors
- 👤 Russell J Diefendorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:33
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5001; C01; C01B; C01B32/00; Y; Y10; Y10S; Y10S376/00; Y10S376/90; Y10S376/904; Y10S376/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A DEPOSITION METHOD WHICH COMPRISES PROVIDING AN ENCLOSURE, POSITIONING A MEMBER WITHIN SAID ENCLOSURE AND SPACED THEREFROM TO PROVIDE A NARROW PASSAGE THEREBETWEEN, EVACUATING SAID PASSAGE, HEATING SAID MEMBER AND SAID ENCLOSURE TO A TEMPERATURE OF AT LEAST 2350*C. TO REMOVE IMPURITIES FROM SAID MEMBER AND SAID ENCLOSURE, AND FLOWING CARBON VAPOR AT A TEMPERATURE IN THE RANGE OF 2000*C. TO 2500*C. THROUGH SAID PASSAGE WHEREBY PYROLYTIC GRAPHITE IS FORMED ON SAID MEMBER AND SAID ENCLOSURE.
Claim 2
Dependent Claim
76 words
A DEPOSITION METHOD WHICH COMPRISES PROVIDING AN ENCLOSURE, POSITIONING A MEMBER WITHIN SAID ENCLOSURE AND SPACED THEREFROM TO PROVIDE A NARROW PASSAGE THEREBETWEEN, EVACUATING SAID PASSAGE, HEATING SAID MEMBER AND SAID ENCLOSURE TO A TEMPERATURE OF AT LEAST 2350*C. TO REMOVE IMPURITIES FROM SAID MEMBER AND SAID ENCLOSURE, AND FLOWING CARBON VAPOR AT A TEMPERATURE IN THE RANGE OF 2000*C. TO 2500*C. THROUGH SAID PASSAGE WHEREBY PYROLYTIC GRAPHITE IS FORMED ON SAID MEMBER AND SAID ENCLOSURE.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |