Patent US3549528A successfully refreshed from Google Patents.
US3549528A
Expired / Lapsed
US
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Ozone sterilization process
Assignee: Individual
•
Filing: 1969-02-28
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Granted: 1970-12-22
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Expires: 1989-02-28
Abstract
No abstract record available.
Inventors
- 👤 Edward T Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:34
CPC Classifications
C; C02; C02F; C02F9/00; A; A61; A61L; A61L2/00; A61L2/16; A61L2/20; A61L2/202; B; B01; B01D; B01D21/00; B01D21/01; B01D21/10; B01D21/12; B01D21/14; B01D21/24; B01D21/30; B01D21/34; C02F1/00; C02F1/34; C02F1/72; C02F1/78; C02F3/00; C02F3/006; C02F3/02; C02F3/30; C02F3/302; C01; C01B; C01B2201/00; C01B2201/60; C01B2201/66; C02F1/76; C02F2307/00; C02F2307/08; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1176287A
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US2050771A
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US2388753A
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US2417722A
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GB760733A
Cited
GB767227A
Cited
US3326747A
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US3448045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |