US3020632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of joining carbides to base metals
Assignee: Individual
•
Filing: 1959-11-12
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Granted: 1962-02-13
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Expires: 1979-11-12
Abstract
No abstract record available.
Inventors
- 👤 Nerses H Krikorian
- 👤 John D Farr
- 👤 Willard G Whitteman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:21
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/06; B22F7/08; C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/025; C04B2237/00; C04B2237/02; C04B2237/04; C04B2237/08; C04B2237/083; C04B2237/09; C04B2237/30; C04B2237/32; C04B2237/36; C04B2237/40; C04B2237/403
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD OF JOINING A CONSOLIDATED MASS COMPOSED OF AT LEAST ONE REFRACTORY METAL CARBIDE IN POWDER FORM, SELECTED FROM THE CALSS CONSISTING OF URANIUM CARBIDE AND ZIRCONIUM CARBIDE TO A SURFACE OF A REFRACTORY METAL BASED SELECTED FROM THE CLASS CONSISTING OF TANTALUM AND NIOBIUM COMPRISING CARBURIZING THE SURFACE OF SAID METAL BASE AND SINTERING SAID MASS AND SAID BASE AT A TEMPERATURE IN THE RANGE OF 1700* C.-2200* C. IN A NON-OXIDIZING ATMOSPHERE WHILE SAID BASE IS HELD IN CONTACT WITH SAID CARBIDE DURING THE SINTERING STEP.
Claim 2
Independent Claim
89 words
A METHOD OF JOINING A CONSOLIDATED MASS COMPOSED OF AT LEAST ONE REFRACTORY METAL CARBIDE IN POWDER FORM, SELECTED FROM THE CALSS CONSISTING OF URANIUM CARBIDE AND ZIRCONIUM CARBIDE TO A SURFACE OF A REFRACTORY METAL BASED SELECTED FROM THE CLASS CONSISTING OF TANTALUM AND NIOBIUM COMPRISING CARBURIZING THE SURFACE OF SAID METAL BASE AND SINTERING SAID MASS AND SAID BASE AT A TEMPERATURE IN THE RANGE OF 1700* C.-2200* C. IN A NON-OXIDIZING ATMOSPHERE WHILE SAID BASE IS HELD IN CONTACT WITH SAID CARBIDE DURING THE SINTERING STEP.
References Cited (Backward Citations)
US2525565A
Cited
US2652621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |