Patent US3428501A successfully refreshed from Google Patents.
US3428501A
Expired / Lapsed
US
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Mixture of ozone and oxygen containing a fluorine additive
Assignee: Airco Inc
•
Filing: 1966-07-18
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Granted: 1969-02-18
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Expires: 1986-07-18
Abstract
No abstract record available.
Inventors
- 👤 Edward R Blanchard
- 👤 William G Marancik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:26
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/10; C06; C06B; C06B23/00; C06B23/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3134648A
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US3134647A
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US3235335A
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US3260630A
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US3260628A
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US3260629A
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US3260627A
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US3284367A
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US3170282A
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US3282750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |