US4651850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic lens
Assignee: Panasonic Holdings Corp
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Filing: 1986-02-24
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Granted: 1987-03-24
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Expires: 2006-02-24
Abstract
Abstract An acoustic lens for use in an ultrasonographic probe is made of a material including silicone rubber mixed with particles of titanium oxide having diameters ranging from 0.08 to 0.20 μm. The particles are mixed at a ratio in the range of 30 to 65 wt %.
Inventors
- 👤 Koji Matsuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:21
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
31 words
An acoustic lens made of a material consisting essentially of silicone rubber and titanium oxide particles having a diameter ranging from 0.08 to 0.20 μm and mixed in the silicone rubber.
Claim 2
Dependent Claim
31 words
An acoustic lens made of a material consisting essentially of silicone rubber and titanium oxide particles having a diameter ranging from 0.08 to 0.20 μm and mixed in the silicone rubber.
Claim 3
Dependent Claim
28 words
An acoustic lens according to claim 1, wherein said particles are mixed at a ratio ranging from 30 wt % to 65 wt % in the silicone rubber.
Claim 4
Dependent Claim
52 words
An acoustic lens according to claim 1, wherein said material is molded into a shape having one rectangular end face and an opposite end face concavely shaped along a longitudinal direction of said one rectangular end face, including an array of ultrasonic transducer elements disposed on said concavely shaped opposite end face.
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) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |