Patent US3236944A successfully refreshed from Google Patents.
US3236944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasound visualization systems
Assignee: Northwestern University
•
Filing: 1962-07-16
•
Granted: 1966-02-22
•
Expires: 1982-07-16
Abstract
No abstract record available.
Inventors
- 👤 Jacobs John Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:49
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
IN AN ULTRASOUND VIEWING SYSTEM FOR THE NONDESTRUCTIVE INSPECTION OF BIOLOGICAL TISSUES AND INCLUDING A SOURCE OF ULTRASOUND RADIATION, THE IMPROVEMENT WHICH COMPRISES AN IMAGE TRANSDUCING PIEZO-RESISTIVE STORAGE TUBE HAVING AN ULTRASOUND FREQUENCY SENSITIVE LAYER DEPOSITED ON A SUPPORTING SUBSTRATE, SAID LAYER COMPRISING A PHONON-SENSITIVE CADMIUM SULFIDE LAYER ACTIVATED WITH COPPER.
Claim 2
Dependent Claim
51 words
IN AN ULTRASOUND VIEWING SYSTEM FOR THE NONDESTRUCTIVE INSPECTION OF BIOLOGICAL TISSUES AND INCLUDING A SOURCE OF ULTRASOUND RADIATION, THE IMPROVEMENT WHICH COMPRISES AN IMAGE TRANSDUCING PIEZO-RESISTIVE STORAGE TUBE HAVING AN ULTRASOUND FREQUENCY SENSITIVE LAYER DEPOSITED ON A SUPPORTING SUBSTRATE, SAID LAYER COMPRISING A PHONON-SENSITIVE CADMIUM SULFIDE LAYER ACTIVATED WITH COPPER.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |