US3234007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of tungsten hexafluoride to form improved tungsten particles
Assignee: Honeywell International Inc
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Filing: 1963-07-05
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Granted: 1966-02-08
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 Jr John M Blocher
- 👤 John H Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:03
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/28; B22F1/00; B22F1/06; B22F1/062; C; C22; C22B; C22B34/00; C22B34/30; C22B34/36; Y; Y10; Y10S; Y10S75/00; Y10S75/95; Y10T; Y10T428/00; Y10T428/12; Y10T428/12181; Y10T428/12465; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12812; Y10T428/12826; Y10T428/1284; Y10T428/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
SUBSTANTIALLY SPHERICAL REFRACTORY METAL PARTICLES CONSISTING OF A MICROSTRUCTURE OF COLUMNAR TUNGSTEN GRAINS, HAVING WITH AND THICKNESS OF ABOUT 1/30 TO ABOUT 2 MICRONS, RADIALLY ORIENTED FROM A SEED OF REFRACTORY METAL, SAID MICROSTRUCTURE OF TUNGSTEN HAVING DENSITY OF AT LEAST 95% THE THEORETICAL DENSITY OF TUNGSTEN, AND UNDERGOING LESS THAN ABOUT 20% RECRYSTALLIZATION UPON BEING SUBJECTED TO ABOUT 2900*F. FOR ABOUT 3 HOURS.
Claim 2
Dependent Claim
64 words
SUBSTANTIALLY SPHERICAL REFRACTORY METAL PARTICLES CONSISTING OF A MICROSTRUCTURE OF COLUMNAR TUNGSTEN GRAINS, HAVING WITH AND THICKNESS OF ABOUT 1/30 TO ABOUT 2 MICRONS, RADIALLY ORIENTED FROM A SEED OF REFRACTORY METAL, SAID MICROSTRUCTURE OF TUNGSTEN HAVING DENSITY OF AT LEAST 95% THE THEORETICAL DENSITY OF TUNGSTEN, AND UNDERGOING LESS THAN ABOUT 20% RECRYSTALLIZATION UPON BEING SUBJECTED TO ABOUT 2900*F. FOR ABOUT 3 HOURS.
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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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |