US3244482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrafine titanium boride
Assignee: Union Carbide Corp
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Filing: 1961-05-03
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Granted: 1966-04-05
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Expires: 1981-05-03
Abstract
No abstract record available.
Inventors
- 👤 James B Culbertson
- 👤 Lamprey Headlee
- 👤 Robert L Ripley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:47
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/02; C01B35/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS FOR PRODUCING UNIFORM SUB-MICRON POWDERS OF TITANIUM BORIDE WHICH COMPRISES INTRODUCING TITANIUM HALIDE VAPOR, BORON HALIDE VAPOR AND SODIUM VAPOR INTO A REACTION ZONE LOCATED WITHIN A REACTOR AND SPACED AWAY FROM ALL SURFACES THEREOF; SPONTANEOUSLY COREDUCING THE TITANIUM HALIDE VAPOR AND THE BORON HALIDE VAPOR WITH THE SODIUM VAPOR ONLY IN THE REACTION ZONE TO FORM SUB-MICRON PARTICLES OF TITANIUM BORIDE OUT OF CONTACT WITH ALL SURFACES OF THE REACTOR; RAPIDLY REMOVING THE THUS FORMED SUB-MICRON PARTICLES FROM CONTACT WITH REACTING VAPORS AND SUBJECTING THE SUB-MICRON TITANIUM PARTICLES TO A TEMPERATURE WHICH LIMITS PARTICLE GRAIN GROWTH TO A PREDETERMINED SUB-MICRON SIZE
Claim 2
Dependent Claim
104 words
A PROCESS FOR PRODUCING UNIFORM SUB-MICRON POWDERS OF TITANIUM BORIDE WHICH COMPRISES INTRODUCING TITANIUM HALIDE VAPOR, BORON HALIDE VAPOR AND SODIUM VAPOR INTO A REACTION ZONE LOCATED WITHIN A REACTOR AND SPACED AWAY FROM ALL SURFACES THEREOF; SPONTANEOUSLY COREDUCING THE TITANIUM HALIDE VAPOR AND THE BORON HALIDE VAPOR WITH THE SODIUM VAPOR ONLY IN THE REACTION ZONE TO FORM SUB-MICRON PARTICLES OF TITANIUM BORIDE OUT OF CONTACT WITH ALL SURFACES OF THE REACTOR; RAPIDLY REMOVING THE THUS FORMED SUB-MICRON PARTICLES FROM CONTACT WITH REACTING VAPORS AND SUBJECTING THE SUB-MICRON TITANIUM PARTICLES TO A TEMPERATURE WHICH LIMITS PARTICLE GRAIN GROWTH TO A PREDETERMINED SUB-MICRON SIZE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |