US3606791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic inspections using polysulfone resins as couplants
Assignee: Chevron USA Inc
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Filing: 1970-03-16
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Granted: 1971-09-21
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Expires: 1990-03-16
Abstract
Abstract A PROCESS IS DISCLOSED FOR MAKING ULTRASONIC INSPECTIONS OF HIGH SURFACE TEMPERATURE OBJECTS BY USING A POLYSULFONE RESIN AS A COUPLANT. SURFACE TEMPERATURES OF THE OBJECT AT THE POINT OF INSPECTION ARE 400*-1,100*F. OR HIGHER.
Inventors
- 👤 Richard P Rathburn
- 👤 Garth M Stanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:26
CPC Classifications
G; G01; G01B; G01B17/00; G01N; G01N29/00; G01N29/22; G01N29/28; G01N2291/00; G01N2291/02; G01N2291/028; G01N2291/02881
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |