US3241230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion bonding of tungsten to tungsten
Assignee: Individual
•
Filing: 1962-10-12
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Granted: 1966-03-22
•
Expires: 1982-10-12
Abstract
No abstract record available.
Inventors
- 👤 Roy I Batista
- 👤 Gale S Hanks
- 👤 Daniel J Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:27
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/06; C23C16/16; B; B23; B23K; B23K20/00; B23K20/22; B23K20/233; B23K35/00; B23K35/001; B23K35/005; C23C26/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD OF DIFFUSION BONDING TUNGSTEN TO TUNGSTEN WHICH COMPRISES FORMING A THIN LAYER OF AN INTERFACIAL MATERIAL AT THE SURFACES TO BE CONTACTED SELECTED FROM THE GROUP CONSISTING OF WO3, MO, W, A MIXTURE OF MO AND W, C, NI AND NI-RE, SIMULTANEOUSLY APPLYING AN AXIAL PRESSURE ABOUT 1000 P.S.I. AND A TEMPERATURE ABOVE ABOUT 1700*C. IN A HYDROGEN ATMOSPHERE TO THE TUNGSTEN SURFACES FOR SUFFICIENT TIME TO PRODUCE DIFFUSION BONDING WITHOUT DEFORMATION OF THE SURFACE.
Claim 2
Independent Claim
77 words
A METHOD OF DIFFUSION BONDING TUNGSTEN TO TUNGSTEN WHICH COMPRISES FORMING A THIN LAYER OF AN INTERFACIAL MATERIAL AT THE SURFACES TO BE CONTACTED SELECTED FROM THE GROUP CONSISTING OF WO3, MO, W, A MIXTURE OF MO AND W, C, NI AND NI-RE, SIMULTANEOUSLY APPLYING AN AXIAL PRESSURE ABOUT 1000 P.S.I. AND A TEMPERATURE ABOVE ABOUT 1700*C. IN A HYDROGEN ATMOSPHERE TO THE TUNGSTEN SURFACES FOR SUFFICIENT TIME TO PRODUCE DIFFUSION BONDING WITHOUT DEFORMATION OF THE SURFACE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |