Patent US3388587A successfully refreshed from Google Patents.
US3388587A
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Method and compositions for inspecting leakage with gas pressure testing
Assignee: Mitsubishi Heavy Industries Ltd
•
Filing: 1965-07-07
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Granted: 1968-06-18
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Expires: 1985-07-07
Abstract
No abstract record available.
Inventors
- 👤 Hara Torakichi
- 👤 Hirota Nobuyoshi
- 👤 Onoshima Yoshio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:39
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/12; G01M3/14; G01M3/146; Y; Y10; Y10S; Y10S252/00; Y10S252/964; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1807810A
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US2544691A
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US2665257A
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US3035005A
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US2890148A
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US3000840A
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US3212897A
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US3226350A
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US3326035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |