US3787245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the boration of titanium and titanium alloys
Assignee: INST fur HAERTEREITECHN DT
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Filing: 1970-10-26
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Granted: 1974-01-22
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Expires: 1990-10-26
Abstract
Abstract Metals, especially titanium and titanium alloys, are borated with a borating agent prepared by annealing amorphous boron at a temperature between 850*C and 1,300*C in an inert gas, especially a noble gas. The boration is best accomplished by packing the metal into the borating agent and heating it to a temperature between 900*C and 1,400*C while passing a noble gas through the borating agent. Activators and inert substances can be added to the borating agents.
Inventors
- 👤 H Kunst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:55
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/60; C23C8/62; C23C8/68; C23C8/70
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
The method of claim 1 wherein said noble gas is argon.
Claim 2
Dependent Claim
38 words
The method of claim 1, wherein an activator is added to said borating agent, said activator being a member selected from the group consisting of an alkali metal halide, an alkaline earth metal halide, and an ammonium halide.
Claim 3
Dependent Claim
26 words
The method of claim 3, wherein said activator is a member selected from the group consisting of ammonium chloride, ammonium fluoride, barium fluoride and sodium bromide.
Claim 4
Dependent Claim
38 words
The method of claim 1, wherein an inert substance is added to said borating agent, said inert substance being a member selected from the group consisting of aluminum oxide, magnesium oxide, zirconium oxide, beryllium oxide, talc and asbestos.
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US3029162A
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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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |