US3264101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing sintered materials
Assignee: Hitachi Ltd
•
Filing: 1963-08-13
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Granted: 1966-08-02
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Expires: 1983-08-13
Abstract
No abstract record available.
Inventors
- 👤 Takeya Yoshiaki
- 👤 Hirano Mikio
- 👤 Hara Nobuhiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:19
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/05; C22C1/051
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR MANUFACTURING MOLYBDENUM, TUNGSTEN AND TUNGSTEN CARBIDE SINTERED MATERIALS WHICH COMPRISES MIXING AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF ZINC, CADMIUM AND MIXTURES THEREOF WITH A SINTERABLE MATERIAL CONSISTING ESSENTIALLY OF ONE OF THE SUBSTANCES MOLYBDENUM, TUNGSTEN AND TUNGSTEN CARBIDE, PRESSING THE RESULTANT MIXTURE INTO A COMPACT, HEATING SAID COMPACT TO A TEMPERATURE ABOVE THE MELTING POINT OF SAID ELEMENT BUT BELOW THE BOILING POINT THEREOF, AND THEN FURTHER HEATING THE COMPACT TO A TEMPERATURE ABOVE THE BOILING POINT OF SAID ELEMENT UNTIL THE CONTENT OF SAID ELEMENT IS ESSENTIALLY REDUCED TO ZERO.
Claim 2
Dependent Claim
96 words
A PROCESS FOR MANUFACTURING MOLYBDENUM, TUNGSTEN AND TUNGSTEN CARBIDE SINTERED MATERIALS WHICH COMPRISES MIXING AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF ZINC, CADMIUM AND MIXTURES THEREOF WITH A SINTERABLE MATERIAL CONSISTING ESSENTIALLY OF ONE OF THE SUBSTANCES MOLYBDENUM, TUNGSTEN AND TUNGSTEN CARBIDE, PRESSING THE RESULTANT MIXTURE INTO A COMPACT, HEATING SAID COMPACT TO A TEMPERATURE ABOVE THE MELTING POINT OF SAID ELEMENT BUT BELOW THE BOILING POINT THEREOF, AND THEN FURTHER HEATING THE COMPACT TO A TEMPERATURE ABOVE THE BOILING POINT OF SAID ELEMENT UNTIL THE CONTENT OF SAID ELEMENT IS ESSENTIALLY REDUCED TO ZERO.
References Cited (Backward Citations)
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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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |