Patent US4116040A successfully refreshed from Google Patents.
US4116040A
Expired / Lapsed
US
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Tissue simulating calibration and reference standard
Assignee: Individual
•
Filing: 1977-11-16
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Granted: 1978-09-26
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Expires: 1997-11-16
Abstract
Abstract A standard to be used for calibrating ultrasonic equipment is comprised of plural, flat parallelly oriented containers alternately filled with castor oil and a mineral oil.
Inventors
- 👤 Gunter Schoknecht
- 👤 Udo Flesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:51
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/58; A61B8/587; G; G01; G01H; G01H3/00; G01H3/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
63 words
Calibration dummy for simulating cell tissue, comprising: a stack of containers, separated from each other by thin foils and defining a path for transmission of ultrasonic waves, the containers being alternately filled with two different liquids, differing in their ultrasonic impedance, but both having acoustic speed, absorption and acoustic impedance values similar to the respective values for different human or animal cell tissue.
Claim 2
Dependent Claim
63 words
Calibration dummy for simulating cell tissue, comprising: a stack of containers, separated from each other by thin foils and defining a path for transmission of ultrasonic waves, the containers being alternately filled with two different liquids, differing in their ultrasonic impedance, but both having acoustic speed, absorption and acoustic impedance values similar to the respective values for different human or animal cell tissue.
Claim 3
Dependent Claim
18 words
Calibration dummy as in claim 1, wherein containers holding the same kind of liquid are fluid conductively interconnected.
Claim 4
Dependent Claim
12 words
Calibration dummy as in claim 1, wherein the liquids are different oils.
Claim 5
Dependent Claim
17 words
Calibration dummy as in claim 1, one oil being castor oil, the other one a mineral oil.
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) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |