US3032397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of metal nitride pigment flakes
Assignee: EIDP Inc
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Filing: 1957-01-25
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Granted: 1962-05-01
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Expires: 1977-01-25
Abstract
No abstract record available.
Inventors
- 👤 Donald O Niederhauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:04
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/06; C01B21/076; C01B21/0763; C09; C09C; C09C1/00; C09C1/0015; C09C1/0018; C01P; C01P2004/00; C01P2004/20; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
PROCESS FOR PREPARING THIN PIGMENT FLAKES OF A NITRIDE OF A METAL SELECTED FROM THE CLASS CONSISTING OF VANADIUM AND GROUP IV-B METALS WHICH COMPRISES HEATING IN A VAPORIZING ZONE, AT A TEMPERATURE WITHIN THE RANGE OF 175 TO 400*C. UNDER A PRESSURE OF LESS THAN 100 MM., AN ADDUCT OF A TETRAHALIDE OF A METAL SELECTED FROM THE CLASS CONSISTING OF VANADIUM AND GROUP IV-B METALS AND A COMPOUND SELECTED FROM THE CLASS CONSISTING OF AMMONIA AND AMMONIUM HALIDES, THEREBY VAPORIZING SAID ADDUCT, IMMEDIATELY PASSING SAID VAPORIZED ADDUCT INTO A COATING ZONE AND INTO CONTACT THEREIN WITH THE SURFACE OF AN INERT SOLID SUBSTRATE WHICH IS AT A TEMPERATURE OF 550* TO 950*C. AND UNDER A PRESSURE OF LESS THAN 100 MM., THEREBY FORMING ON THE SURFACE OF SAID SOLID SUBSTRATE A COATING HAVING A THICKNESS OF 0.1 TO 3 MICRONS OF A NITRIDE OF A METAL SELECTED FROM THE CLASS CONSISTING OF VANADIUM AND GROUP IV-B METALS, AND REMOVING SAID COATING IN THE FORM OF THIN PIGMENT FLAKES FROM THE SURFACE OF SAID SOLID SUBSTRATE.
Claim 2
Dependent Claim
177 words
PROCESS FOR PREPARING THIN PIGMENT FLAKES OF A NITRIDE OF A METAL SELECTED FROM THE CLASS CONSISTING OF VANADIUM AND GROUP IV-B METALS WHICH COMPRISES HEATING IN A VAPORIZING ZONE, AT A TEMPERATURE WITHIN THE RANGE OF 175 TO 400*C. UNDER A PRESSURE OF LESS THAN 100 MM., AN ADDUCT OF A TETRAHALIDE OF A METAL SELECTED FROM THE CLASS CONSISTING OF VANADIUM AND GROUP IV-B METALS AND A COMPOUND SELECTED FROM THE CLASS CONSISTING OF AMMONIA AND AMMONIUM HALIDES, THEREBY VAPORIZING SAID ADDUCT, IMMEDIATELY PASSING SAID VAPORIZED ADDUCT INTO A COATING ZONE AND INTO CONTACT THEREIN WITH THE SURFACE OF AN INERT SOLID SUBSTRATE WHICH IS AT A TEMPERATURE OF 550* TO 950*C. AND UNDER A PRESSURE OF LESS THAN 100 MM., THEREBY FORMING ON THE SURFACE OF SAID SOLID SUBSTRATE A COATING HAVING A THICKNESS OF 0.1 TO 3 MICRONS OF A NITRIDE OF A METAL SELECTED FROM THE CLASS CONSISTING OF VANADIUM AND GROUP IV-B METALS, AND REMOVING SAID COATING IN THE FORM OF THIN PIGMENT FLAKES FROM THE SURFACE OF SAID SOLID SUBSTRATE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-30 | 1965-10-30 | 1966-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-30 | 1969-10-30 | 1970-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-30 | 1973-10-30 | 1974-05-01 | $7700.00 | Window Closed / Lapsed |