Patent US3621733A successfully refreshed from Google Patents.
Patent US3689795A successfully refreshed from Google Patents.
US3689795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boron-containing rotating x-ray target
Assignee: Schwarzkopf Technologies Corp
•
Filing: 1971-05-27
•
Granted: 1972-09-05
•
Expires: 1991-05-27
Abstract
Abstract This invention relates to an improvement in rotating X-ray targets involving incorporation of small quantities of boron into the molybdenum-containing base portion.
Inventors
- 👤 Friedrich Benesovsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:56
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10; H01J35/108; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12833
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
22 words
The improvement of claim 1 in which boron is present in an amount of between about 100 to 200 parts per million.
Claim 2
Dependent Claim
20 words
The improvement of claim 1 in which the tungsten-containing focal track is comprised of an alloy of rhenium and tungsten.
Claim 3
Dependent Claim
21 words
The improvement of claim 1 in which the boron-containing molybdenum body also contains up to 2 percent by weight of hafnium.
Claim 4
Dependent Claim
26 words
The improvement of claim 4 in which the body also contains an alloying amount of a metal from the group consisting of tungsten, titanium or zirconium.
Claim 5
Dependent Claim
19 words
The improvement of claim 4 in which the focal track is comprised of an alloy of tungsten and rhenium.
Claim 6
Dependent Claim
27 words
The improvement of claim 6 in which the focal track contains an alloying addition of at least one metal of the group consisting of osmium and iridium.
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |