Patent US4152147A successfully refreshed from Google Patents.
US4152147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beryllium-containing iron-boron glassy magnetic alloys
Assignee: Honeywell International Inc
•
Filing: 1978-04-10
•
Granted: 1979-05-01
•
Expires: 1998-04-10
Abstract
Abstract {PG,1 Introduction of beryllium into iron-boron base glassy alloys improves the thermal stability while substantially retaining the saturation moment of the base alloy. The alloys of the invention consist essentially of about 10 to 18 atom percent boron, about 2 to 10 atom percent beryllium and about 72 to 80 atom percent iron plus incidental impurities.
Inventors
- 👤 Ryusuke Hasegawa
- 👤 Ranjan Ray
- 👤 Lee E. Tanner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:57
CPC Classifications
C; C22; C22C; C22C45/00; C22C45/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
35 words
A beryllium-substituted, iron-boron, primarily glassy magnetic alloy consisting essentially of about 10 to 18 atom percent boron, about 2 to 10 atom percent beryllium and about 72 to 80 atom percent iron plus incidental impurities.
Claim 2
Dependent Claim
35 words
A beryllium-substituted, iron-boron, primarily glassy magnetic alloy consisting essentially of about 10 to 18 atom percent boron, about 2 to 10 atom percent beryllium and about 72 to 80 atom percent iron plus incidental impurities.
Claim 3
Dependent Claim
18 words
The alloy of claim 1 in which the beryllium content ranges from about 2 to 6 atom percent.
Claim 4
Dependent Claim
15 words
The alloy of claim 2 in which the beryllium content is about 2 atom percent.
Claim 5
Dependent Claim
30 words
The alloy of claim 1 consisting essentially of about 18 atom percent boron, 2 to 10 atom percent beryllium and about 80 to 72 atom percent iron plus incidental impurities.
Claim 6
Dependent Claim
30 words
The alloy of claim 1 consisting essentially of about 2 to 10 atom percent beryllium, about 18 to 10 atom percent boron and about 80 percent iron plus incidental impurities.
Claim 7
Dependent Claim
9 words
The alloy of claim 1 which is substantially glassy.
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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |