US2992127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel graphite articles and method of making
Assignee: Texas Instruments Inc
•
Filing: 1958-12-23
•
Granted: 1961-07-11
•
Expires: 1978-12-23
Abstract
No abstract record available.
Inventors
- 👤 Lloyd E Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:32
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/52; C04B41/80; C04B41/81; C04B41/89; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A PROCESS FOR TREATING A GRAPHITE PART WHICH COMPRISES COATING A GRAPHITE PART WITH POWDERED SILICON AND HEATING TO A TEMPERATURE OF FROM ABOUT 1360*C. TO ABOUT 1420*C. IN AN INERT ATMOSPHERE AND THEREAFTER COATING THE GRAPHITE PART WITH SILICON NITRIDE.
Claim 2
Dependent Claim
41 words
A PROCESS FOR TREATING A GRAPHITE PART WHICH COMPRISES COATING A GRAPHITE PART WITH POWDERED SILICON AND HEATING TO A TEMPERATURE OF FROM ABOUT 1360*C. TO ABOUT 1420*C. IN AN INERT ATMOSPHERE AND THEREAFTER COATING THE GRAPHITE PART WITH SILICON NITRIDE.
References Cited (Backward Citations)
US448915A
Cited
US876332A
Cited
US981513A
Cited
US2431326A
Cited
US2614947A
Cited
US2691605A
Cited
US2677627A
Cited
US2707157A
Cited
US2859139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |