US3451379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating liquid fuel oil
Assignee: Kay Seven Co Ltd
•
Filing: 1966-07-26
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Granted: 1969-06-24
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Expires: 1986-07-26
Abstract
No abstract record available.
Inventors
- 👤 Sadatomo Kuribayashi
- 👤 Eisei Tayama
- 👤 Makio Mishima
- 👤 Syuichi Yuzawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:45
CPC Classifications
F; F02; F02M; F02M27/00; F02M27/08; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 0
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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) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |