US3261697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation resistant carbonaceous bodies and method for making
Assignee: Airco Inc
•
Filing: 1962-01-16
•
Granted: 1966-07-19
•
Expires: 1982-01-16
Abstract
No abstract record available.
Inventors
- 👤 William E Parker
- 👤 John F Rakszawski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:15
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C04B35/532
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
AN ARTICLE MADE OF CARBON AND HAVING A LOW RATE OF OXIDATION UPON EXPOSURE TO OXIDATION CONDITIONS AT TEMPERATURES OF 700*C. AND ABOVE, WHICH ARTICLE CONSISTS OF GRAPHITIZED CARBON HAVING HOMOGENEOUSLY DISTRIBUTED THEREIN 0.001 TO 20 MOLE PERCENT OF A BORON SILICIDE.
Claim 2
Dependent Claim
42 words
AN ARTICLE MADE OF CARBON AND HAVING A LOW RATE OF OXIDATION UPON EXPOSURE TO OXIDATION CONDITIONS AT TEMPERATURES OF 700*C. AND ABOVE, WHICH ARTICLE CONSISTS OF GRAPHITIZED CARBON HAVING HOMOGENEOUSLY DISTRIBUTED THEREIN 0.001 TO 20 MOLE PERCENT OF A BORON SILICIDE.
References Cited (Backward Citations)
US2013625A
Cited
GB456602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |