US3351690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treating pyrolytic graphite and boron nitride bodies with simultaneous application of multiaxial tension
Assignee: General Electric Co
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Filing: 1962-04-18
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Granted: 1967-11-07
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Expires: 1982-04-18
Abstract
No abstract record available.
Inventors
- 👤 Edward R Stover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:07
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/583; C04B33/00; C04B33/32; C04B33/326; C04B35/52; C04B35/522
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD FOR FORMING AN ARTICLE WHICH COMPRISES: DEPOSITING A RELAATIVELY THIN BODY, HAVING AN INNER MAJOR SURFACE AND AN OUTER MAJOR SURFACE AT A TEMPERATURE IN THE RANGE OF 1700*C. TO 2500*C. ON A SURFACE OF A HOLLOW MEMBER HAVING FINE PORES THERETHROUGH; SAID BODY BEING MADE OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF PYROLYTIC GRAPHITE AND PYROLYTIC BORON NITRIDE; HEATING SAID BODY TO A TEMPERATURE OF AT LEAST 2500*C., AND SIMULTANEOUSLY EXERTING PRESSURE OF SIGNIFICANT
Claim 2
Independent Claim
78 words
A METHOD FOR FORMING AN ARTICLE WHICH COMPRISES: DEPOSITING A RELAATIVELY THIN BODY, HAVING AN INNER MAJOR SURFACE AND AN OUTER MAJOR SURFACE AT A TEMPERATURE IN THE RANGE OF 1700*C. TO 2500*C. ON A SURFACE OF A HOLLOW MEMBER HAVING FINE PORES THERETHROUGH; SAID BODY BEING MADE OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF PYROLYTIC GRAPHITE AND PYROLYTIC BORON NITRIDE; HEATING SAID BODY TO A TEMPERATURE OF AT LEAST 2500*C., AND SIMULTANEOUSLY EXERTING PRESSURE OF SIGNIFICANT
References Cited (Backward Citations)
US2817605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |