US3763694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic inspections using polymeric materials as couplants
Assignee: Chevron USA Inc
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Filing: 1969-03-20
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Granted: 1973-10-09
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Expires: 1989-03-20
Abstract
Abstract A process is disclosed for making ultrasonic inspections of high surface temperature objects by using a polymeric material as a couplant. The polymeric materials are specifically defined in terms of thermal characteristics. Surface temperatures of the object at the point of inspection may be 300* - 1,100* F. or higher.
Inventors
- 👤 R Rathburn
- 👤 G Stanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:45
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
The process of claim 1 wherein Ts is greater than 400* F.
Claim 2
Dependent Claim
12 words
The process of claim 1 wherein said polymeric material is a polyester.
Claim 3
Dependent Claim
14 words
The process of claim 3 wherein said polyester is a polymer of ethylene terephthalate.
Claim 4
Dependent Claim
15 words
The process of claim 4 wherein said distortion temperature is not greater than 700* F.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |