US2959503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for treating titanium metal
Assignee: NL Industries Inc
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Filing: 1958-05-23
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Granted: 1960-11-08
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Expires: 1978-05-23
Abstract
No abstract record available.
Inventors
- 👤 John T Lindson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:11
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/089; C03C3/062; C03C3/064; C03C8/00; C03C8/02; C23; C23D; C23D17/00; C23D5/00; C23D5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A PROCESS FOR PROTECTING THE SURFACE OF TITANIUM METAL AGAINST OXIDATION DURING METAL PROCESSING OPERATIONS WHICH COMPRISES: APPLYING A GLASS FRIT COMPOSITION TO THE SURFACE OF SAID TITANUM METAL TO FORM A CONTIUOUS GLASS FRIT COATING THEREON, SUBJECTING SAID COATED TITANUIM METAL TO A METAL PROCESSING OPERATION AT A TEMPERATURE IN THE RANGE OF FROM 700*C TO 1000*C AND DURING SAID METAL PROCESSING OPERATION MATURING SAID GLASS FRIT TO FORM A CONTINUOUS GLASS COATING ON SAID METAL SURFACE AND MAINTAINING SAID CONTINUOUS GLASS COATING ON THE SURFACE OF SAID METAL, AND THEREAFTER REMOVING SAID GLAS COATING FROM THE METAL SURFACE UPON COMPLETION OF SAID METAL PROCESSING OPERATION, SAID GLASS FRIT COMPOSITION CONSITING OF FROM 15% TO 25% BY WEIGHT OF ALKALI METAL OXIDE, FROM 10% TO 20% BY WEIGHT OF BORON OXIDE, FROM 30% TO 60% BY WEIGHT OF SILICON DIOXIDE AND FROM 4% TO 45% BY WEIGHT OF TITANUIM DIOXIDE.
Claim 2
Dependent Claim
151 words
A PROCESS FOR PROTECTING THE SURFACE OF TITANIUM METAL AGAINST OXIDATION DURING METAL PROCESSING OPERATIONS WHICH COMPRISES: APPLYING A GLASS FRIT COMPOSITION TO THE SURFACE OF SAID TITANUM METAL TO FORM A CONTIUOUS GLASS FRIT COATING THEREON, SUBJECTING SAID COATED TITANUIM METAL TO A METAL PROCESSING OPERATION AT A TEMPERATURE IN THE RANGE OF FROM 700*C TO 1000*C AND DURING SAID METAL PROCESSING OPERATION MATURING SAID GLASS FRIT TO FORM A CONTINUOUS GLASS COATING ON SAID METAL SURFACE AND MAINTAINING SAID CONTINUOUS GLASS COATING ON THE SURFACE OF SAID METAL, AND THEREAFTER REMOVING SAID GLAS COATING FROM THE METAL SURFACE UPON COMPLETION OF SAID METAL PROCESSING OPERATION, SAID GLASS FRIT COMPOSITION CONSITING OF FROM 15% TO 25% BY WEIGHT OF ALKALI METAL OXIDE, FROM 10% TO 20% BY WEIGHT OF BORON OXIDE, FROM 30% TO 60% BY WEIGHT OF SILICON DIOXIDE AND FROM 4% TO 45% BY WEIGHT OF TITANUIM DIOXIDE.
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) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |